Kerala PSC Previous Years General Science Question Bank in English Part 3
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- 101. The control rods used in nuclear reactor are made of ?
- A) Barium
B) Graphite
C) Cadmium
D) Antimony - Answer
- C) Cadmium
- Explanation
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- 102. The only person who got Nobel prize for Physics twice ?
- A) Frederick Sanger
B) William Shockley
C) John Bardeen
D) Walter Brattain - Answer
- C) John Bardeen
- Explanation
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- 103. A frog with body Temperature of 20°C is transferred to an area with 30°C temperature. What will be the temperature of frog in the new Environment ?
- A) 20°C
B) 30°C
C) 25°C
D) Fluctuates between 20°C to 30°C - Answer
- B) 30°C
- Explanation
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- 104. A farmer applied a hormone to his rice plants and the plant grew abnormally tall. Which of the following do you think, was the hormone ?
- A) Auxin
B) Gibberellin
C) Ethylene
D) Cytokinin - Answer
- A) Auxin
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- 105. The organ in our body with out muscle is
- A) heart
B) lungs
C) kidney
D) liver - Answer
- B) Lungs
- Explanation
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- 106. Dermatology is the study of
- A) heart
B) eyes
C) skin
D) nose - Answer
- C) Skin
- Explanation
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- 107. Which of the following protect us from cold ?
- A) Vitamin
B) Protein
C) Fat
D) Carbohydrates - Answer
- C) Fat
- Explanation
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- 108. Most chemically active element is
- A) fluorine
B) hydrogen
C) osmium
D) lithium - Answer
- A) Fluorine
- Explanation
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- 109. PH value from 0 to 7 indicates that is
- A) salt
B) water
C) acid
D) base - Answer
- C) Acid
- Explanation
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- 110. Atoms with different atomic number and mass number, having same number of neutron are called
- A) isotopes
B) isobars
C) isohytes
D) isotones - Answer
- D) isotones
- Explanation
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- 111. Sound with intensity greater than ---------- causes sound pollution
- A) 70 db
B) 50 db
C) 80 db
D) 90 db - Answer
- D) 90 db
- Explanation
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- 112. Colour of soap bubbles are due to
- A) refraction
B) defraction
C) interference
D) reflection - Answer
- C) Interference
- Explanation
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- 113. What is the talc used in Talcum Powder ?
- A) Calcium Carbonate
B) Magnesium Carbonate
C) Hydrated Magnesium Silicate
D) Zinc Sulphate - Answer
- C) Hydrated Magnesium Silicate
- Explanation
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- 114. Which of the following is a Vitamin Deficiency Disease ?
- A) Goitre
B) Typhoid
C) Kwashiorkor
D) Beriberi - Answer
- D) Beriberi
- Explanation
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- 115. The irregular and partial refraction of light ray in a medium is known as
- A) Scattering
B) Dispersion
C) Interference
D) Diffraction - Answer
- B) Dispersion
- Explanation
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- 116. About 90 percentage of Sun is made up of ?
- A) Oxygen
B) Helium
C) Nitrogen
D) Hydrogen - Answer
- D) Hydrogen
- Explanation
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- 117. Glass known as optical glass ?
- A) Fibre Glass
B) Soft Glass
C) Flint Glass
D) Safety Glass - Answer
- A) Fibre Glass
- Explanation
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- 118. In which light the rate of Photosynthesis is maximum ?
- A) Blue
B) Yellow
C) Red
D) Green - Answer
- C) Red
- Explanation
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- 119.Which type of lenses are prescribed for the correction of astigmatism of human eye?
- A) convex
B) Plane
C) concave
D) cylindrical - Answer
- Correct Option : D
- Explanation
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- 120. Permanent hardness of water may be removed by the addition of
- A) Lime
B) Alum
C) Potassium permanganate
D) Sodium Carbonate - Answer
- Correct Option : D
- Explanation
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- 121. Which of the following is not a natural fibre?
- A) Coir
B) Silk
C) Rayon
D) Jute - Answer
- Correct Option : C
- Explanation
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- 122. The SI Unit of energy is
- A) Newton
B) Joules
C) Ampere
D) Erg - Answer
- Correct Option : B
- Explanation
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- 123. Fizzy soft drinks usually contain?
- A) Hydrochloric Acid
B) Nitric Acid
C) Carbonic Acid
D) Phosphoric Acid - Answer
- Correct Option : D
- Explanation
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- 124. The scientific study of beauty is called ?
- A) Ethics
B) Synthesis
C) Aesthetics
D) Dialectics - Answer
- Correct Option : C
- Explanation
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- 125. Which of the following is not a noble gas?
- A) Argon
B) Radon
C) Neon
D) Oxygen - Answer
- Correct Option : D
- Explanation
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