JOIN ADRE 2.0 Telegram Group

CBSE class 7 Science Quiz | CBSE class 7 Science Short Questions & Answers

Questions
41 Stainless steel pans are usually provided with copper bottoms. The reason for this could be that
A copper bottom makes the pan more durable.
B such pans appear colourful.
C copper is a better conductor of heat than the stainless steel.
D copper is easier to clean than the stainless steel.

Answer: copper is a better conductor of heat than the stainless steel.
42 Higher the temperature of the body _____ is the kinetic energy of the molecules of that body?
A higher
B lower
C same
D none of these

Answer: higher
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

43 When matter gets warmer, the atoms and molecules in that matter __________________
A stand still
B move faster
C move slower
D can't say

Answer: move faster
44 Chemical name of Oil of Vitriol is __________
A Nitric acid
B Acetic acid
C Sulphuric acid
D Sodium Hydroxide

Answer: Sulphuric acid
45 Sodium hydroxide is found in
A Lemon
B Soap
C Oil of Vitriol
D Table Salt

Answer: Soap
46 Lactic acid is found in
A Curd
B Apple
C Soap
D Lime

Answer: Curd
47 Acetic acid is found in
A Curd
B Spinach
C Vinegar
D Citrus fruits

Answer: Curd
48 Which of the following colours is given by phenolphthalein in a basic salt solution.
A yellow
B pink
C orange red
D colourless

Answer: pink
49 The most commonly used natural indicator’ Litmus’ is extracted from
A Lichens
B Turmeric
C Beet Root
D China rose

Answer: Lichens
50 Which of the following is a strong acid?
A acetic acid
B nitric acid
C lactic acid
D citric acid

Answer: nitric acid
51 Special type of substances used to test whether a substance is acidic/basic are known as
A Indicators
B Acids
C Bases
D Salt

Answer: Indicators
52 Substances which are bitter in taste, feel soapy on touching are known as
A Acids
B Bases
C Indicators
D Neutral solution

Answer: Bases
53 Acids turns blue litmus to ______
A green
B yellow
C red
D black

Answer: red
54 Which of the following is used in match industry.
A Potassium chlorate
B Sodium carbonate
C Sodium chloride
D Sodium bicarbonate

Answer: Potassium chlorate
55 The word acid comes from the Latin word 'acere' which means
A Sweet
B Salty
C Sour
D Neutral

Answer: Sour
56 When carbon dioxide gas is passed through lime water, it turns lime water into ________
A milky
B blue
C silver
D golden

Answer: milky
57 The process of obtaining Salt by the evaporation of sea water is known as ____________.
A Crystallisation
B Sublimation
C Galvanisation
D Amalgamation

Answer: Crystallisation
58 Any characteristic that gives a sample of matter the ability/inability to undergo a change that alters its composition. It is called ______.
A chemical prpoerty
B physical peoprty
C physical change
D chemical change

Answer: chemical prpoerty
59 Formation of gas bubbles is _________.
A a physical change
B a physical property
C a chemical change
D a chemical prpoerty

Answer: a chemical change
60 Which of the following is a chemical property of Aluminium?
A It corrodes with air
B It is soft and malleable
C It melts at 660°C
D Its density is 2.70 g/cm3

Answer: It corrodes with air

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!
Advertisement
Assam Direct Recruitment Test Series