Deck 5: Chemistry and Physics: Particles, Acids, Gases, and Minerals

Question 1

Random Movement of particles was discovered by

A)Robert Brown
B)E. Goldstein
C)James Chadwick
D)Wilhein Weins

Answer 1

Robert Brown

Question 2

Which of the following non-metals occur in liquid form at room temperature?

A)bromine
B)carbon
C)sulphur
D)chlorine

Answer 2

bromine

Question 3

Brass is an example of a ______

A)homogenous compound
B)homogenous mixture
C)heterogeneous mixture
D)heterogeneous compound

Answer 3

homogenous mixture

Question 4

Which of the following is not a noble gas?

A)helium
B)neon
C)argon
D)hydrogen

Question 5

Which of the following acids is present in sour milk?

A)glycolic acid
B)lactic acid
C)citrus acid
D)tartaric acid

Question 6

Which of the following acids is called the king of the acids?

A)acetic acid
B)phosphoric acid
C)oxalic acid
D)sulphuric acid

Question 7

The sharp pain caused by the sting of an ant is due to

A)malic acid
B)nitric acid
C)formic acid
D)lactic acid

Question 8

Vitamin C is an organic acid known as

A)ascorbic acid
B)citrus acid
C)glycolic acid
D)acetic acid

Question 9

Soaps are sodium salts of

A)mineral acids
B)fatty acids
C)bases
D)carbonic acid

Question 10

Which of the following is not a property of acids?

A)all acids have a sour taste
B)acids turn blue litmus red
C)acids turn red litmus blue
D)all acids form H+

Question 11

Which of the following acid is used in fire extinguishers?

A)hydrochloric acid
B)sulphuric acid
C)nitric acid
D)oxalic acid

Question 12

Which of the following acid is used by goldsmiths for cleaning gold and silver ornaments?

A)HCL
B)H₂SO₄
C)HNO₃
D)H₃PO₄

Question 13

Which order of relative size amongst the following is incorrect?

A)Li < Na < K
B)C < Si < Al
C)Mg > Al < Na
D)F < Cl < Br

Question 14

Which one of the following has the smallest size?

A)Al
B)Al+
C)Al⁺²
D)Al⁺³

Question 15

Which of the following is an example of fossil fuel?

A)coal gas
B)coke
C)natural gas
D)producer gas

Question 16

When steam is passed over hot coke, it produces

A)producer gas
B)synthesis gas
C)tear gas
D)coal gas

Question 17

Producer gas is a mixture of

A)carbon monoxide and nitrogen gas
B)carbon monoxide and hydrogen gas
C)carbon monoxide and water vapour
D)carbon monoxide and nitrous oxide

Question 18

Water gas consists of

A)water vapour and coal dust
B)a mixture of carbon monoxide and hydrogen
C)a mixture of carbon monoxide and the nitrogen
D)water vapour and methane.

Question 19

The gas used in the welding and cutting of metals is

A)ethane
B)ethene
C)ethyne
D)propene

Question 20

Coal with largest C content is

A)anthracite
B)peat
C)lignite
D)bituminous

Question 21

An allotropic form of carbon used for cutting and drilling is

A)charcoal
B)bone charcoal
C)graphite
D)diamond

Question 22

Cinnabar is an ore of

A)Pb
B)Zn
C)Hg
D)Cu

Question 23

Which of them is not an ore of silver?

A)Ag₂S
B)AgNO₃
C)AgCl
D)None of these