Sunday, 19 May 2019

Daily Chemistry Quiz for RRB JE : 20/05/2019

1) Match the following using codes given below:


A)Glass 1) Phosphorous

B)Cement 2) Clay

C)Matches 3) Silica

D)Ink 4) Carbon black

Codes:

a) 3 1 4 2

b) 1 2 3 4

*c) 3 2 1 4

d) 4 2 1 3

2) What is the composition of baking powder?

a)Na2CO3+Acetic acid

b)NaHCO3+ Citric acid

c)NaHCO3+Na2CO3

*d)NaHCO3 Tartaric acid

3) What is THERAPEUTICS?

*a)Science of art of heating

b)Science of art of cosmetics

c)Science of medicine

d)Science of nature

4) Identify the manmade element

a) Carbon

b) Gold

*c) Californium

d) Calcium

5) Which of the following is not an inert gas?

a) Helium

b) Neon

*c) Freon

d) Xenon

6) The metal present in vitamin B-12 is

a) Magnesium

b) Copper

c) Iron

*d) Cobalt

7) LPG contains

a)Methane, Ethane and Hexane

b)Ethane, Hexane and Nonane

*c)Methane, Butane and Propane

d)Ethane, Octane and Nonane

8) Natural rubber is apolymer of

a) Ethylene

*b) Isoprene

c) Buna-N

d) Buna-S

9) A photographic plate uses

*a) Silver bromide

b) Silver chloride

c) Silver iodide

d) Potassium bromide

10) The sour taste of curd is due to

a) Acetic acid

b) citric acid

*c) Lactic acid



d) tartaric acid

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