General Science-105

1.      Which is/ are the important raw materials in cement industry ?

a.       Limestone

b.      Gypsum & Clay

c.       Clay

d.      Limestone & Clay

2.      Which of the following is the petroleum wax?

a.       Bees wax

b.      Carnauba wax

c.       Paraffin wax

d.      Jojoba wax

3.      Which of the following fibers is generally preferred for making gauze and lint?

a.       Cotton

b.      Rayon

c.       Nylon

d.      Terylene

4.      Rubber is coagulated from latex by adding:

a.       Hydrochloric acid

b.      Acetic acid

c.       Sulphuric acid

d.      Carbonic acid

5.      Paper is manufactured by:

a.       Wood and resin

b.      Wood, Sodium and Bleaching powder

c.       Wood and bleaching powder

d.      Wood, Calcium, hydrogen sulphate and resin

6.      Which synthetic fibre is known as artificial silk?

a.       Cotton

b.      Rayon

c.       Terylene

d.      Nylon

7.      Deep blue colour is imparted to glass by the presence of :

a.       Iron oxide

b.      Cupric oxide

c.       Nickel oxide

d.      Cobalt oxide

8.      The combustible material at the tip of a safety match stick is :

a.       Sulphur

b.      Manganese dioxide

c.       Phosphorus

d.       Antimony sulphide

9.      Which of the following roofs provide better protection against fire?

a.       Cement slab

b.      Asbestos sheet

c.       Reinforced concrete

d.      None of these

10.  The material used for bleaching paper pulp is:

a.       Chlorine

b.      Caustic soda

c.       Sodium Hypochlorite

d.      Lime

11.  Which of the following is a protein?

a.       Wool

b.      Starch

c.       Natural rubber

d.      Cellulose

12.  Soap is a mixture of sodium or potassium salts of:

a.       Monocarboxylic acid

b.      Glycerols

c.       Dicarboxylic acid

d.      Tricarboxylic acid

13.  Which of the following material is used to prepare blue-black ink?

a.       Gallic acid

b.      Tannic acid

c.       Ferrous sulphate

d.      All of these

14.  The type of glass used in making prisms and lenses is:

a.       Soft glass

b.      Pyrex glass

c.       Jena glass

d.      Flint glass

15.  Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called:

a.       Carbon Monoxide

b.      Phosphine

c.       Phosgene

d.      None of these

16.  Which of the following is commonly called a polyamide?

a.       Rayon

b.      Orion

c.       Terylene

d.      Nylon

17.   Cow milk is a rich source of

a.       Vitamin A

b.      Vitamin B1

c.       Vitamin C

d.      Vitamin D

18.   The element found in the surface of the Moon is:

a.       Tin

b.      Tungsten

c.       Tantalum

d.      Titanium

19.   The average salinity of sea water is :

a.       2%

b.      3%

c.       2.5%

d.      3.5%

20.   Which of the following is the most stable element?

a.       Uranium

b.      Hydrogen

c.       Oxygen

d.      Lead