IAS/IPS Prelims Chemistry - General Awareness Multiple Choice Questions and Answers

Questions

21 Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines ?

A methane and air

B oxygen and acetylene

C hydrogen and oxygen

D carbon dioxide with ethane

View Answer Comment

Answer: Option [A]

22 In an atom, the order of filling up of the orbitals is governed by

A Hund’s rule

B Aufbau’s principle

C Heisenberg’s uncertainly principle

D Pauli’s exclusion principle

View Answer Comment

Answer: Option [B]

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

23 In a dry cell (battery), which of the following are used as electrolytes ?

A Ammonium chloride and Calcium chloride

B Magnesium chloride and Zinc chloride

C Sodium chloride and Calcium chloride

D Ammonium chloride and Zinc chloride

View Answer Comment

Answer: Option [D]

24 Which one of the following is a mixed fertilizer ?

A CAN

B Urea

C NPK

D Ammonium sulphate

View Answer Comment

Answer: Option [C]

25 Consider the following statements: Cook is one of the materials of the charge added to blast furnace for the production of steel / iron. Its function is to

Of these statements

I. act as the reducing agent

II. remove silica associated with the iron ore

III. function as fuel ; to supply heat

IV. act as an oxidizing agent

A I and II are correct

B II and IV are correct

C I and III are correct

D III and IV are correct

View Answer Comment

Answer: Option [C]

26 An aqueous solution of copper sulphate is acidic in nature because the salt undergoes

A dialysis

B hydrolysis

C photolysis

D electrolysis

View Answer Comment

Answer: Option [B]

27 Which are the materials generally employed as solder in soldering operations in electronics ?

A Lead and tin

B Iron and tin

C Aluminium and iron

D Aluminium and lead

View Answer Comment

Answer: Option [A]

28 What are Rubies and Sapphires chemically known as ?

A Lead tetroxide

B Silicon dioxide

C Boron nitride

D Aluminium oxide

View Answer Comment

Answer: Option [D]

29 Which one of the following is another name of RDX ?

A Cyclonite

B Cyclohexane

C Cyanohydrin

D Dextran

View Answer Comment

Answer: Option [A]

30 Which one of the following is used as an explosive ?

A Graphite

B Nitroglycerine

C Mercuric oxide

D Phosphorus trichloride

View Answer Comment

Answer: Option [B]

By Gkseries more articles

IAS/IPS Prelims Chemistry - General Knowledge Questions and Answers for UPSC Exam | Page-3

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

Chapters

Read More Chemistry Questions

Today's Top Current Affairs

Current Affairs MCQs

State-wise Current Affairs

General Knowledge

Month-wise Current Affairs 2023

Category-wise Current Affairs

Jobs by Qualification

Free Mock Test

Information

Study Material

Contact