General Science - Chemistry

11. Trimethylxanthine is a chemical name of a stimulant which is found in tea and coffee. What is the popular name?

[A] Thein
[B] Caffeine
[C] Theobromine
[D] Theophylline

12. Which compound of mercury is used as antiseptic?

[A] Mercuric sulphide
[B] Mercuric oxide
[C] Mercuric chloride
[D] Mercuric iodide

13. Potassium permanganate is used to purify water. Which among the following properties of Potassium permanganate helps in this work?

[A] sterilizing
[B] oxidizing
[C] reducing
[D] leaching

14. Which among the following is a common salt in Detergents?

[A] Sulphate
[B] Nitrate
[C] Sulphonate
[D] Carbonate

15. Which among following is also known as white gold?

[A] Nickel

[B] Rhodium
[C] Platinum
[D] Palladium

16. Who among the following is the first Indian to win a Hoover Prize?

[A] Atal Bihari Vajpayee
[B] APJ Abdul Kalam
[C] Man Mohan Singh
[D] Sonia Gandhi

17. Charles Goodyear is known for which of the following ?

[A] Experiments on Rubber Plants
[B] Vulcanization of Rubber
[C] Invention of Radial Tyres
[D] Invention of Artificial Rubber

18. What is the internal restoring force acting per unit area of cross section of the deformed body called?

[A] Strain
[B] Stress
[C] Pressure
[D] Surface Tension

19. Which of the following factors do not affect the value of modulus of elasticity of a body?

[A] Nature of material
[B] Temperature of the body
[C] Length and volume and of the body
[D] None of the above

20. How many electrons can the s-orbital accommodate?

[A] 1
[B] 2
[C] 8
[D] 16