home Home » General Study » Chemistry - Questions and Answers Objective Questions

Chemistry - Questions and AnswersPage 28

271.

Marsh gas primarily contains
(a)CH4
(b)C2H6
(c)H2S
(d)C2H2
Comment
Answer is: ANA

272.

Which one of the following is not an allotrope of carbon?
(a)Soot
(b)Graphite
(c)Diamond
(d)Carborundum
Comment
Answer is: DNA

273.

Which gas is used in aerated water?
(a)CO2
(b)SO2
(c)CO
(d)Water vapours
Comment
Answer is: ANA

274.

Percentage of lead in lead pencil is
(a)30
(b)20
(c)10
(d)Zero
Comment
Answer is: DNA

275.

Glass is best described as a
(a)Solid
(b)Liquid
(c)Supercooled liquid
(d)Colloidal liquid
Comment
Answer is: CNA

276.

The colour if blue glass is due to the presence of oxide of
(a)Chromium
(b)Cobalt
(c)Gold
(d)Silver
Comment
Answer is: BNA

277.

Which one of the following is a mixed fertilizer?
(a)Urea
(b)CAN
(c)Ammonium sulphate
(d)NPK
Comment
Answer is: DNA

278.

Pure water can be obtained from sea water by
(a)Centrifugation
(b)Plasmolysis
(c)Reverse osmosis
(d)Sedimentation
Comment
Answer is: CNA

279.

On burning hydrogen in air, the colour of flame is
(a)Green
(b)Light bluish
(c)Yellow
(d)None of these
Comment
Answer is: BNA

280.

Water gas is produced by
(a)Passing steam over red hot coke
(b)Passing steam and air over red hot coke
(c)Burning coke in excess of air
(d)Burning coke in limited supply of air
Comment
Answer is: ANA

Comments

No comment yet.

copyright 2014-2018 This site is powered by sNews | Login