General Science-85

1.      An earth satellite is kept moving in its orbit. It is due to the phenomenon of centripetal force provided by

a.    The rocket engine propelling the Satellite

b.    The gravitational attraction of the earth on the satellite

c.     The radio waves sent to the satellite from the ground

d.     The gravitational attraction of the celestial bodies inhabiting the space

2.     Conversion of heat into electrical energy can be achieved by using a:

a.     Ammeter

b.     Hydrometer

c.     Voltmeter

d.     Thermocouple

3.      Which of the following may be used as a fuel for nuclear reactors?

a.    Plutonium

b.     Cadmium

c.     Lead

d.     Aluminum

4.     X-rays were discovered by:

a.     Thomson

b.     Braggs

c.     Johnson

d.     Rontgen

5.     The principle involved in the absorption of ink or water by a piece of blotting papers is:

a.     Suction action

b.     Principle of absorption

c.     Capillary action

d.     Offset procedure

6.     Which one of the following is neither an element nor a compound?

a.    Air

b.     Glucose

c.     Gold

d.     Water

7.     The metal used in storage batteries is:

a.     Tin

b.     Copper

c.     Lead

d.     Nickle

8.     At constant temperature the rate of a chemical reaction:

A.    Is equal to the product of active masses

B.    Is inversely proportional to the product of active masses

C.    Is directly proportional to the product of active masses

D.    Has no relation to the product of active masses

9.     Who gave the theory of ionization?

a.     Faraday

b.    Arrhenius

c.     Rutherford

d.     Cavendish

10.  Oxygen may be prepared by the action of water on-

a.     Oxides

b.     Sub-Oxides

c.     Peroxides

d.     Compound Oxides

11.  Which of the following does not contain a Hydrophobic structure?

a.    Rubber

b.    Glycogen

c.     Lanolin

d.     Linseed oil

12.  Aqua regia is a mixture of:

a.     One volume of hydrochloric acid and three volumes of nitric acid

b.     Equal volumes of hydrochloric and nitric acid

c.     One volume of hydrochloric acid and two volumes of nitric acid

d.     Three volumes of hydrochloric acid and one volume of nitric acid

13.  The substances which can be used for removing nitrogen from air is:

a.    Magnesium

b.     Phosphorous

c.     Calcium Chloride

d.     Lime water

14.  Which one of the following is not soluble in water?

a.    Lead sulphate

b.     Zinc sulphate

c.     Calcium sulphate

d.     Sodium sulphate

15.  Which one of the metals is the best conductor of electricity and heat?

a.    Silver

b.     Potassium

c.     Copper

d.     Sodium

16.  Which is the heaviest among the following?

a.    Gold

b.     Silver

c.     Iron

d.     Copper

17.  Highly electro positive metals are best produced by:

a.    Electrolytic methods

b.     Reduction with carbon of their oxides

c.     Straight thermal decomposition of salts

d.     Reduction with hydrogen of their halides

18.  Which one of the following Vitamins contains Nitrogen?

a.     Vitamin A

b.    Vitamin B

c.     Vitamin C

d.     Vitamin D

19.  The inert gas which is substituted for Nitrogen in the air used by deep sea divers for breathing is:

a.     Neon

b.     Krypton

c.     Argon

d.     Helium

20.  Alkali metals are usually kept under:

a.     Petrol

b.     Absolute alcohol

c.     Carbon tetrachloride

d.     Kerosene

21.  A bundle of energy is known as:

a.     Joules

b.     Photon

c.     Joules/ photon

d.     Quantum

22.  Purity of butter is determined in terms of:

a.    Acetyl value

b.    Reichert-Miessal Value

c.     Iodine Value

d.     Saponification Value

23.  Number of optical isomers in which Sugar can exist:

a.     8

b.     4

c.     16

d.     32

24.  Sodium metal reacts with:

a.    Ethanol

b.     Ethyl ether

c.     Acetone

d.     Propene

25.  Ethyl alcohol can be differentiated from Methyl alcohol chemically by:

a.     Victor Meyer’s test

b.    ldoform test

c.     Luca’s test

d.     Oxidation product