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Nov 28, 2015

[QandA] General Science Questions (100 Questions) - Part 1





(01)
The symbol of the element ‘Tungsten’ is
[A] Ta
[B] W
[C] Tl
[D] Tc

(02)
Which one of the following statement is correct?
[A] The image formed by a concave mirror for an objective lying at infinity is at the right principal focus, highly diminished, real and inverted
[B] A ray of light parallel to the principal axis after reflection from a concave mirror appears to diverge from the principal focus of the mirror
[C] The focal length of a spherical mirror is double of its radius of curvature
[D] A ray of light travelling from a rarer medium to a denser medium bends away from the normal

(03)
Which one of the following statement is correct?
[A] Rutherford’s alpha – particle scattering experiment led to the discovery of electron
[B] JJ Thompson suggested that the nucleus of an atom contains protons
[C] The atomic number of an element is the same as the number of protons in the nucleus of its atom
[D] The mass number of an atom is equal to the number of electrons in its shells

(04)
Which one of the following statements is not correct?
[A] Application of lime makes the soil acidic
[B] High acidity in soil is typical of humid climate
[C] Increasing soil acidity results in declining soil fertility
[D] Arid climate is characterized by alkaline soil

(05)
The alkali metals have relatively low melting point. Which one of the following alkali metals is expected to have the highest melting point?
[A] Li
[B] Na
[C] K
[D] Rb

(06)
Which one of the following is useful in papper manufacturing industry?
[A] Fibrous plants
[B] Orchids
[C] Non – flowering plants
[D] Plants growing in high altitude

(07)
Which one of the following statements is not correct?
[A] In steady flow of a liquid, the velocity of liquid particles reaching at a particular point is the same at all points
[B] Steady flow is also called streamlined flow
[C] In steady flow, each particle may not follow the same path as taken by a previous particle passing through that point
[D] Two streamlines cannot intersect each other

(08)
A brass ball is tied to a thin wore and swung so as to move uniformly in a horizontal circle. Which of the following statements in this regard is/are true?
1. The ball moves with constant velocity
2. The ball moves with constant speed
3. The ball moves with constant acceleration
4. The magnitude of the acceleration of the ball is constant.
[A] 1 only
[B] 1 and 3 only
[C] 1, 2 and 4 only
[D] 2 and 4 only

(09)
Two long wires each carrying a DC current in the same direction are placed close to each other. Which one of the following statements is correct?
[A] The wires will attract each other
[B] The wires will repel each other
[C] There will be no force between the wires
[D] There will be a force between the wires only at the moment when the current is switched ON or OFF




(10)
Which one of the following is not a Green House Gas?
[A] Water Vapours
[B] Methane
[C] Ozone
[D] Carbon Monoxide

(11)
Muscle fatigue is due to the accumulation of
[A] cholesterol
[B] lactic acid
[C] lipoic acid
[D] triglycerides

(12)
The absolute zero, i.e., temperature below which is not achievable, is about
[A] 0C
[B] – 273K
[C] – 273°C
[D] – 300°C

(13)
Lightning conductors are used to protect building from lightning strikes. Which of the following statements is/are true about lightning conductors?
1. Lightning conductors create an electric field at its top so that lightning strikes it preferentially.
2. Lightning conductors reduce the effect of the strike by uniformly distributing the charge (current) over the surface of the building
3. Lightning conductors take all charge (current) to deep down in the Earth
4. Lightning conductors must be installed at a place taller than the building
[A] 1 and 2 only
[B] 3 and 4 only
[C] 1, 3 and 4 only
[D] 4 only

(14)
Consider the following reaction:
In the reaction given above, the mixture of CO and H2 is
[A] natural gas
[B] water gas
[C] producer gas
[D] industrial gas

(15)
Living things are grouped into subgroups like plant kingdom / animal kingdom. Which one of the following is not correct for animal kingdom?
[A] cannot make their own food
[B] body contains cellulose
[C] do not have chlorophyll
[D] migrate from one place to another

(16)
The silvering in thermos flasks is done to avoid heat transfer by
1. Convection                      2. Conduction                      3. Radiation
[A] 1 and 2 only
[B] 2 and 3 only
[C] 1 and 3 only
[D] 1, 2 and 3

(17)
Addition of gypsum to cement
[A] reduces setting time of cement
[B] produces very light color cement
[C] increases setting time of cement
[D] shining surface is formed

(18)
Conservation of momentum in a collision between particles can understood on the basis of
[A] Newton’s first law of motion
[B] Newton’s second law of motion
[C] Both Newton’s Second law of motion and Newton’s third law of motion
[D] Conservation of Energy
(19)
To weld metals together, high temperature is required. Such a high temperature is obtained by burning
[A] Acetylene in oxygen
[B] LPG in oxygen
[C] Methane in oxygen
[D] Acetylene in nitrogen

(20)
Which one of the following gases is found in highest quantity in Exosphere?
[A] Hydrogen
[B] Helium
[C] Nitrogen
[D] Oxygen

(21)
In blood, platelets are required for
[A] transporting oxygen
[B] transporting carbon dioxide
[C] initating blood clotting
[D] initating degradation of urea

(22)
In SI unit of force ‘Newton’ (N) is given by (where ‘m’ stands for ‘metre’ and ‘s’ stands for ‘seconds’)
[A] 1 N = 1 kg / ms2
[B] 1 N = 1 kgm / s2
[C] 1 N = 1 kg s2 / m
[D] 1 N = 1kg m s2

(23)
Which one of the following is not a place of action in human body for the malaria parasite plasmodium?
[A] Liver
[B] Kidney
[C] Red Blood Cell
[D] Brain

(24)
The loudness of sound is related to
[A] its frequency
[B] its amplitude
[C] its speed
[D] its pitch

(25)
Match:
List – I
List – II
(a)
Li
1
Time keeper in atomic clocks
(b)
Na
2
Batteries
(c)
K
3
Transfer of nerve impulses
(d)
Cs
4
Control of the water content in the blood
            (a)       (b)       (c)       (d)
[A]      2          3          4          1
[B]      1          2          3          4
[C]      2          4          3          1
[D]      1          3          2          4

(26)
X – rays are electromagnetic radiation whose wavelengths are of the order of
[A] 1 m
[B] 10-1m
[B] 10-5m
[D] 10-10m

(27)
In case of a compound microscope, which of the following statements is/are correct?
1. The length of the eye piece is larger than the focal length of the objective
2. The focal length of the eye piece is smaller than the focal length of the objective
3. The image produced in a normal optical microscope is real
4. The image produced in a normal optical microscope is virtual
[A] 1 only
[B] 1 and 4 only
[C] 2 and 3 only
[D] 2 and 4 only

(28)
Which one of the following statements is not correct?
[A] The radius of curvature of a concave mirror is twice its focal length
[B] Power of a convex lens is negative and that of a concave lens is positive
[C] The radius of curvature of a plane mirror is infinity
[D] When a ray of light passes from an optically denser medium to an optically rarer medium, the angel of refraction is greater than the corresponding angle of incidence

(29)
Ammonia (NH3) obtained from different sources always has same proportion of nitrogen and hydrogen. It proves the validity of law of
[A] reciprocal proportion
[B] constant proportion
[C] multiple proportion
[D] none of the above

(30)
Which one of the following statements is not correct?
[A] If the velocity and acceleration have opposite sign, the object is slowing down
[B] If the velocity is zero at an instant, the acceleration should also be zero at that instant
[C] Id the velocity is zero for a time interval; the acceleration is zero at any instant within the time interval
[D] If the position and velocity have opposite sign, the object is moving towards the origin

(31)
Boric acid is an acid because its molecule
[A] accepts OH from water releasing proton
[B] combines with proton from water molecule
[C] contains replaceable H+ ion
[D] gives up a proton

(32)
Who among the following discovered antibiotic producing fungus from Penicillium genus?
[A] Louis Pasteur
[B] Sir Alexander Fleming
[C] Stanley Prusiner
[D] Robert Hooke

(33)
Three equal resistances when combine in series are equivalent to 90 ohm. Their equivalent resistance when combined parallel will be
[A] 10 ohm
[B] 30 ohm
[C] 270 ohm
[D] 810 ohm

(34)
The main constituent of Vinegar is
[A] Acetic acid
[B] Ascorbic acid
[C] Citric acid
[D] Tartaric acid

(35)
White Phosphorous glows in the dark due to
[A] amorphous character
[B] slow oxidation
[C] high ignition temperature
[D] good conducting property of electricity

(36)
Which one of the following is not an example of eukaryotic organism?
[A] yeast
[B] bacteria
[C] plant
[D] human being

(37)
Which one of the following statement is not correct?
[A] The Kelvin scale of temperature is called the Absolute Scale
[B] Visible light radiation has wavelength range of 200 – 700 nm
[C] The capacity to do work is called power
[D] The wavelength of Gamma rays is less than that of X – rays

(38)
Graphite is much better conductor of heat and electricity than diamond. This is due to the fact that each carbon atom in graphite
[A] undergoes sp2 hybridisation and forms three sigma bonds with three neighbouring carbon atoms
[B] undergoes sp3 hybridisation
[C] is tetrahedrally bonded
[D] is free from van der Waals force

(39)
Which one of the following vitamins is synthesized in our body?
[A] Vitamin – A
[B] Vitamin – B
[C] Vitamin – C
[D] Vitamin – D

(40)
Which one of the following is the SI unit of the thermal conductivity of a material?
[A] Wm-1K-1
[B] Wm/K
[C] Wm-1/K-1
[D] Js-1m-1K

(41)
Which one of the following statement is not correct?
[A] Conduction can occur easily in solids, less easily in liquids but hardly at all in gases
[B] Heat energy is carried by moving particles in a convection current
[C] Heat energy is carried by electromagnetic waves in radiation
[D] The temperature at which a solid changes into a liquid is called s the boiling point

(42)
Which of the following are the properties of an electron?
1. Electron is a constituent of cathode ray
2. Electron is a negatively charged particle
3. The mass of the electron is equal to the mass of the proton
4. Electron is deflected by the electric field but not by the magnetic field
[A] 1 and 2 only
[B] 1, 2 and 3 only
[C] 3 and 4 only
[D] 1 and 4 only

(43)
Carbon and energy requirements of autotrophic organisms are fulfilled by
[A] Photosynthesis
[B] Gluconeogenesis
[C] Glycogenesis
[D] External Sources

(44)
Which of the following statements regarding heavy water are correct?
1. It is extensively used as moderator in nuclear reactors
2. It cannot be used in exchange reaction to study reaction mechanism
3. Viscosity of heavy water is relatively smaller than that of ordinary water
4. The dielectric constant of heavy water is smaller than that of ordinary water
[A] 1 and 2 only
[B] 2 and 3 only
[C] 3 and 4 only
[D] 1 and 4 only

(45)
Sound travels faster in solids than in gases, because
[A] density of solids is more
[B] modulas of elasticity is more than that of gases
[C] sound cannot travel through gases
[D] sound is an electromagnetic wave

(46)
In case of reflection it is well known that when a mirror turned through an angle the reflected ray turns through
[A] same angle
[B] twice the angle
[C] thrice the angle
[D] half the angle

(47)
The process, by which a Prism forms different colours is known as
[A] Diffraction
[B] Reflection
[C] Refraction
[D] Diffusion

(48)
Hormone Insulin is a
[A] glyco lipid
[B] fatty acid
[C] peptide
[D] sterol

(49)
Which among the following is largest endocrine gland in the body?
[A] Thyroid
[B] Parathyroid
[C] Adrenal
[D] Pituitary

(50)
Enzymes are essential for body because
[A] they provide energy
[B] they control nervous system
[C] these are the structural part of body
[D] these are the catalyst of biochemical activity




(51)
Consider the following with reference to human body:
1. The common bile duct releases its contents in stomach
2. The pancreatic duct releases its contents into duodenum
Which of the statements given above is/are correct?
[A] 1 only
[B] 2 only
[C] Both 1 and 2
[D] Neither 1 nor 2

(52)
Meosis is also known as
[A] multiplication division
[B] equational division
[C] reduction division
[D] dysfunctional division

(53)
Which one of the following is considered as a cell within a cell?
[A] Ribosome
[B] Chloroplast
[C] Lysosome
[D] Golgi Apparatus

(54)
How many electrons will have a charge of one Coulomb?
[A] 6.2 * 1018
[B] 6.2 * 1019
[C] 6.2 * 10–18
[D] 6.2 * 10–19

(55)
The work done in moving a positive change on an equipotential surface
[A] infinite
[B] finite and positive
[C] finite and negative
[D] zero

(56)
A permanent magnet repels
[A] ferromagnetic substance only
[B] diamagnetic substances only
[C] paramagnetic substance only
[D] both paramagnetic and diamagnetic substances

(57)
“A straight horizontal conductor carries a steady electric current from South to North”
Which of the following events would happen if a small magnetic compass is places just above the wire?
[A] the needle remains perpendicular to the conductor
[B] the needle remains parallel to the conductor
[C] the North Pole of the needle is deflected towards East
[D] the North Pole of the needle is deflected towards West

(58)
Efficiency of the catalyst depends on its
[A] molecular state
[B] number of valencies
[C] physical state
[D] amount used

(59)
The order of appearance of the following with increasing temperature during the refining of crude oil is
[A] kerosene, gasoline, diesel
[B] diesel, gasoline, kerosene
[C] gasoline, kerosene, diesel
[D] gasoline, diesel, kerosene

(60)
A gas which burns with blue flame is
[A] CO
[B] O2
[C] N2
[D] CO2

(61)
Consider the following diseases:
1. Diphtheria                       2. Chickenpox                     3. Smallpox
Which of the above diseases has/have not been eradicated in India?
[A] 1 and 2 only
[B] 2 and 3 only
[C] 1 and 3 only
[D] 1, 2 and 3

(62)
Acid rain is caused by the pollution of environment by
[A] carbon dioxide and nitrogen
[B] carbon monoxide and carbon dioxide
[C] ozone and carbon dioxide
[D] nitrous oxide and sulphur dioxide

(63)
With reference to the food chains in ecosystems, which of the following kinds of organism is/are known as decomposer organism is/are known as decomposer organism/organisms?
1. Virus                      2. Fungi                     3. Bacteria
[A] 1 only
[B] 2 and 3 only
[C] 1 and 3 only
[D] 1, 2 and 3

(64)
Due to improper/indiscriminate disposal of old and used computer or their parts, which of the following are released into the environment as e – waste?
1. Beryllium             2. Cadmium             3. Chromium                       4. Heptachlor
5. Mercury                6. Lead                      7. Plutonium
[A] 1, 3, 4, 6, and 7
[B] 1, 2, 3, 5 and 6
[C] 2, 3, 5 and 6
[D] None of these

(65)
Modulus of elasticity is
[A] strain / stress
[B] stress / strain
[C] stress * strain
[D] stress – strain

(66)
Double refraction produces
[A] one image
[B] two images
[C] four images
[D] nine images

(67)
The source of oxygen evolved during photosynthesis was definitely proved by
[A] Ruben and Kamen
[B] Hill
[C] Blackman
[D] Briggs

(68)
Which of the following has no membrane?
[A] Vacoule
[B] Lyzozome
[C] Nucleolus
[D] Endoplasmic reticulum

(69)
Acromegaly is related with
[A] Hyper secretion of thyroid stimulating hormone
[B] Hyper secretion of growth hormone after puberty
[C] Hyper secretion of growth hormone before puberty
[D] Hyper secretion of thyroxine before puberty

(70)
Match:
List – I  (Salt)
List – II (Colour)
(a)
Barium Salt
1
Yellow
(b)
Potassium Salt
2
Crimson
(c)
Sodium Salt
3
Apple Green
(d)
Strontium Salt
4
Violet
            (a)       (b)       (c)       (d)
[A]      1          2          3          4
[B]      4          3          2          1
[C]      2          4          3          1
[D]      3          4          1          2

(71)
Consider the following statements:
Assertion (A): Hot air balloons rise into the sky
Reason (R): Air when heated becomes lighter than the surronding cold air
[A] Both (A) and (R) are individually true and (R) is the correct explanation of (A)
[B] Both (A) and (R) are individually true and (R) is not the correct explanation of (A)
[C] (A) is true and (R) is false
[D] (A) is false and (R) is true

(72)
Sunburns produce cell damage in the skin. Which portion of the solar spectrum is capable of producing them?
[A] visible region
[B] infra - red region
[C] ultra - violet region
[D] radio region

(73)
Which one of the following statements regarding baking powder is NOT correct?
[A] It is a mixture
[B] It forms bubbles in a wet mixture
[C] It can be used instead of using yeast
[D] It does not contain sodium bicarbonate

(74)
Match:
List – I  (Compound)
List – II (Colour)
(a)
Urea
1
Blue
(b)
Hydrous copper sulphate
2
White
(c)
Lead sulphide
3
Pinkish Purple
(d)
Potassium permanganate
4
Black
            (a)       (b)       (c)       (d)
[A]      2          1          4          3
[B]      2          4          1          3
[C]      3          4          1          2
[D]      3          1          4          2

(75)
Heavy water of an atomic reactor is :
[A] deionised water
[B] an oxide of heavier isotope of oxygen
[C] a mixture of ice and water
[D] an oxide of heavier isotope of hydrogen

(76)
“Bhabhatron" is a
[A] robot to fix leakage of radioactive material nuclear plants
[B] a new nuclear reactor
[C] machine for cancer treatment
[D] sterilization of medical instruments by radiation

(77)
Solutions in test tubes containing H2O and aqueous NaOH can be differentiated with the help of
[A] red litmus
[B] blue litmus
[C] Na2Co3
[D] HCl (aqueous)

(78)
Which one of the following is used in welding industry?
[A] Methane
[B] Ethane
[C] Acetylene
[D] Benzene

(79)
Amalgam is a mixture of
[A] any non-metal and chlorine
[B] any metal and fluorine
[C] any non-metal and lead
[D] any metal and mercury

(80)
Regarding the atom of a chemical element, the magnetic quantum number refers to
[A] shape
[B] size
[C] orientation
[D] spin

(81)
When a moving bus suddenly applies brakes, the passengers sitting in it fall in the forward direction. This can be explained by
[A] the theory of relativity
[B] Newton’s first law
[C] Newton’s second law
[D] Newton’s third law

(82)
How does mangroves functions as a safety hedge?
[A] The mangrove swamps separate the human settlements from the sea by a wide zone in which people neither live nor venture out
[B] The mangroves provide both food and medicines which people are in need of after any natural disaster
[C] The mangrove trees do not get uprooted by storms and tides because of their extensive roots
[D] The mangrove trees are tall with dense canopies and serve as an excellent shelter during a cyclone or tsunami

(83)
Match:
List – I
List –II
(a)
Ammonium Sulphate
1
Fertilizer
(b)
Choloroform
2
Reducing Agent
(c)
Carbon
3
Anaesthesia
(d)
Hydrogen Peroxide
4
Bleaching agent
            (a)       (b)       (c)       (d)
[A]      1          3          2          4
[B]      1          2          3          4
[C]      2          3          4          1
[D]      3          2          1          4

(84)
Whisky and Brandy contain
[A] 80-90% ethyl alcohol
[B] 25-30% ethyl alcohol
[C] 40-50% ethyl alcohol
[D] 4-12% ethyl alcohol

(85)
Venturimeter is used to measure
[A] fluid velocity
[B] fluid surface tension
[C] fluid temperature
[D] fluid density

(86)
Ammonotelism is common in
[A] fishes
[B] birds
[C] mammals
[D] reptiles

(87)
During electrolysis of molten calcium hydride
[A] calcium is deposited at anode
[B] hydrogen is liberated at anode
[C] hydrogen is liberated at cathode
[D] hydrogen and oxygen are liberated at cathode and anode respectively

(88)
Longitudinal half of the chromosome is called
[A] Centromere
[B] Chromatid
[C] Chromatin
[D] None of these

(89)
The term ‘gene’ was proposed by
[A] Bateson
[B] Punnet
[C] Darlington
[D] Johannsen

(90)
Aqueous solution of which of the following is a good conductor of electricity?
[A] Ammonium acetate
[B] Glucose
[C] Ammonia
[D] Acetic acid

(91)
Kwashiorkor is a ______
1. Protein deficiency disease
2. Iron deficiency disease
3. Nutritional deficiency disease
[A] 1 and 2 only
[B] 2 and 3 only
[C] 1 and 3 only
[D] 1, 2 and 3

(92)
The younger leaves of a tomato plant in your garden shows interveinal chlorosis. Select what supplement what you will give?
[A] Sulphur
[B] Iron
[C] Copper
[D] Molybdenum

(93)
Consider the following statements:
Assertion (A): Insulin lowers the blood glucose concentration
Reason (R): Lowered blood glucose concentration stimulates secretion of glucagon
[A] Both (A) and (R) are true and (R) is the correct explanation of (A)
[B] Both (A) and (R) are true and (R) is not the correct explanation of (A)
[C] (A) is true, and (R) is false
[D] (A) is false, and (R) is true

(94)
Match:
List – I
List – II
(a)
Moment of Linear Momentum
1
Buoyancy
(b)
Ability of free surface of a liquid to minimize its surface area
2
Potential
(c)
Work done per unit charge
3
Surface Tension
(d)
Upward force experienced by a body when wholly or partially immersed in a fluid
4
Angular Momentum
            (a)       (b)       (c)       (d)
[A]      4          1          2          3
[B]      4          2          3          1
[C]      4          3          2          1
[D]      4          1          3          2

(95)
Assertion (A): On rainy day small oil film on water show brilliant colours
Reason (R): This is due to polarization of light
[A] Both (A) and (R) are true and (R) is the correct explanation of (A)
[B] Both (A) and (R) are true and (R) is not the correct explanation of (A)
[C] (A) is true, and (R) is false
[D] (A) is false, and (R) is true

(96)
________ is
1. cannot be synthesized in the body
2. a PUFA
3. involved in phospholipid synthesis and breakdown of cholesterol
4. inhibit blood clotting and reduce the risk of heart attack
[A] non – essential fatty acid
[B] essential fatty acid
[C] saturated fatty acid
[D] poly unsaturated fatty acid

(97)
Assertion (A): Boron Carbide is used to make bullet – proof clothing
Reason (R1): It is an interstitial carbide and has icosahedral structure
Reason (R2): The fibres of them have enormous tensile strength
[A] All (A), (R1) and (R2) are correct
[B] (A) is correct, (R1) is the correct explanation for (A) and (R2) is incorrect
[C] (A) is correct, both (R1) and (R2) are correct but cannot explain (A)
[D] (A) is correct, (R1) is incorrect but (R2) is the correct explanation for (A)

(98)
Match:
List – I
List – II
(a)
Haematite
1
Lead
(b)
Cinnabar
2
Iron
(c)
Calamine
3
Mercury
(d)
Galena
4
Zinc
            (a)       (b)       (c)       (d)
[A]      2          3          4          1         
[B]      3          2          1          4         
[C]      2          4          3          1
[D]      4          2          1          3

(99)
Match:
List – I
List – II
(a)
Raman Effect
1
Magnetic Field
(b)
Zeeman Effect
2
Scattering
(c)
Stark Effect
3
Relative Velocity
(d)
Doppler Effect
4
Electric Field
            (a)       (b)       (c)       (d)
[A]      3          1          2          4         
[B]      4          3          2          1
[C]      2          4          3          1
[D]      2          1          4          3

(100)
What is the genome of AIDS virus made up of?
[A] DNA
[B] RNA
[C] Chromosome
[D] Gene

====THE END====è
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