JOIN ADRE 2.0 Telegram Group

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

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

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

Answer: Option [B]
Advertisement
Article and Schedule Quiz Start Test!

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

Answer: Option [D]
24 Which one of the following is a mixed fertilizer ?
A CAN
B Urea
C NPK
D Ammonium sulphate

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

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

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

Answer: Option [A]
28 What are Rubies and Sapphires chemically known as ?
A Lead tetroxide
B Silicon dioxide
C Boron nitride
D Aluminium oxide

Answer: Option [D]
29 Which one of the following is another name of RDX ?
A Cyclonite
B Cyclohexane
C Cyanohydrin
D Dextran

Answer: Option [A]
30 Which one of the following is used as an explosive ?
A Graphite
B Nitroglycerine
C Mercuric oxide
D Phosphorus trichloride

Answer: Option [B]

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!

Chapters

Read More Chemistry Questions

Advertisement