Top 1000+ Solved Chemistry MCQ Questions Answer

From 796 to 810 of 1421

Q. Which of the following has pH value 7?

a. Pure Water

b. H2SO4

c. Sodium Carbonate

d. HCl

  • a. Pure Water

Q. Chemical name of vinegar is -

a. Acetone

b. Acetic acid

c. Formaldehyde

d. Ethanol

  • b. Acetic acid

Q. Mercury is a –

a. solid metal

b. liquid metal

c. solid non-metal

d. liquid non-metal

  • b. liquid metal

Q. Spirit in contact with body gives cool sensation because it is –

a. liquid

b. transparent

c. highly volatile

d. a good conductor

  • c. highly volatile

Q. Natural rubber is the polymer of :

a. Isoprene

b. Styrene

c. Butadiene

d. Ethylene

  • a. Isoprene

Q. If lime water is kept in the air, it turns milky due to presence of –

a. Carbondioxide

b. Nitrogen

c. Oxygen

d. Sulphurdioxide

  • a. Carbondioxide

Q. Heavy metal pollution of water is caused by:

a. Paints

b. Wood burning

c. Acid Plants

d. Domestic sewage

  • a. Paints

Q. Nitrogen forms a variety of compounds in all oxidation states ranging from -

a. -3 to + 5

b. -3 to +3

c. -3 to + 4

d. -3 to +6

  • a. -3 to + 5

Q. The next higher homologue of C6H14 is -

a. C6H14

b. C7H12

c. C6H12

d. C7H16

  • d. C7H16

Q. Biogas majorly contains -

a. Ethane

b. Methane

c. Hydrogen

d. CO

  • b. Methane

Q. The sewage obtained from water closets and urinals is known as –

a. Sanitary waste

b. Industrial waste

c. Garbage

d. Sullage

  • a. Sanitary waste

Q. In organic compounds, nitrogen is estimated by –

a. Carius method

b. Victor-Meyees method

c. Liebigs method

d. Dumas' method

  • d. Dumas' method

Q. The hottest part of the gas flame is known as –

a. blue zone

b. non-luminous zone

c. luminous zone

d. dark zone

  • c. luminous zone

Q. What is dry ice?

a. Solid Carbon dioxide

b. Solid Nitrogen dioxide

c. Solid Sulphur dioxide

d. Solid Water

  • a. Solid Carbon dioxide
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