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TNPSC Science Questions and Answers (1-20)

The following General Science Questions and Answers is useful for forthcoming TNPSC Exams

1. Which of the following Metal used in Storage Batteries?

(A) Iron

(B) Copper
(C) Lead
(D) Zinc
(Answer: C)

2. LPG (Liquid Petroleum Gas) Contains?

(A) Butane and Isobutene

(B) Butane and Propane
(C) Isobutane and Propane
(D) Butane, Isobutane and Propane
(Answer: B)

3. Isotopes are Separated by

(A) Filtration

(B) Sublimation
(C) Distillation
(D) Crystalization
(Answer: C)

4. Which of the following is used as Lubricant?

(A) Graphite

B) Silica
(C) Diamond
(D) Iron Oxide
(Answer: A)

5. A Substance which changes readily into Vapour without Heating is called?

(A) Efflorescent

(B) Synthetic
(C) Volatile
(D) Effervescent
(Answer: C)

6. The Balloons are filled with?

(A) Helium
(B) Oxygen
(C) Nitrogen
(D) Argon
(Answer : A)

7. A Mixture of Salt and Sand can be Separated by?

(A) Sublimation 
(B) Dissolving water
(C) Gravity separation 
(D) Dry distillation 
(Answer : B)

8. Rayon is Chemically called?

(A) Glucose 
(B) Amylase
(C) Cellulose 
(D) Peptin 
(Answer : C)

9. Photo-Synthesis is a/ an?

(A) exothermic process 
(B) endothermic process
(C) a neutral process 
(D) a thermostatic process 
(Answer : B)

10. Tetra-ethyl Lead is used as?

(A) Mosquito repellent 
(B) Pain Killer
(C) Fire extinguisher 
(D) Petrol additive 
(Answer : D)

11. The Element Found in the Surface of the Moon is called?

(A) Tin 
(B) Tungsten
(C) Tantalum 
(D) Titanium
(Answer : D)

12. The Hardest Substance available in Earth is called?

(A) Platinum 
(B) Silicon
(C) Diamond 
(D) Gold 
(Answer : C)

13.Which of the following is not a Chemical Reaction?

(A) Burning of paper 
(B) Digestion of food
(C) Conversion of water into steam 
(D) Burning of coal 
(Answer : C)

14. The Colour of Emerald is?

(A) Violet 
(B) Yellow
(C) Deep Green 
D) Prussian Blue 
(Answer : C)

15. Which of the following Gases is obtained by the Reaction of Water with Calcium Carbide?

(A) Acetylene 
(B) Ethylene
(C) Methane 
(D) Water gas 
(Answer : A)

16. Which of the following is a Non-Metal that Remains Liquid in Room Temperature?

(A) Bromine 
(B) Chlorine
(C) Helium 
(D) Phosphorus 
(Answer: A)

17. Potassium Nitrate is used in?

(A) Salt 
(B) Glass
(C) Fertiliser 
(D) Medicine
(Answer : B)

18. Which of the following Gases is Lighter than Air?

(A) Carbon dioxide 
(B) Oxygen
(C) Ammonia 
(D) Chlorine
(Answer : C)

19. The Material used for Bleaching Paper Pulp is?

(A) Chlorine 
(B) Caustic soda
(C) Sodium 
(D) Lime
(Answer : C)

20. Galvanization is Deposition of?

(A) Zinc of iron 
(B) aluminium on Iron
(C) tin on iron 
(D) copper on iron
(Answer: A)

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