Class8 Sound
Assertion: Vibrations are the basic cause of all sounds.
Reason: Whenever a source produces a sound there are always some vibrations linked with it.
Assertion: Vibrations are the basic cause of all sounds.
Reason: Whenever a source produces a sound there are always some vibrations linked with it.
Anonymous Quiz
60%
Both A and R are true and R is the correct explanation of A
20%
Both A and R are true but R is not the correct explanation of A
20%
A is true but R is false
0%
A is false but R is true
❤3
Class 7 Nutrition in plants
Assertion (A) : Water and minerals present in soil are absorbed by roots and transported to leaves.
Reason (R) : Carbon dioxide from air is taken through stomata present on the surface of leaves.
Assertion (A) : Water and minerals present in soil are absorbed by roots and transported to leaves.
Reason (R) : Carbon dioxide from air is taken through stomata present on the surface of leaves.
Anonymous Quiz
25%
Both A and R are true and R is the correct explanation of A
75%
Both A and R are true but R is not the correct explanation of A
0%
A is true but R is false
0%
A is false but R is true
❤3
Class 8 Microorganisms: Friends and Foe
Yeast is used in the production of
Yeast is used in the production of
Anonymous Poll
60%
Alcohol
0%
Sugar
20%
Oxygen
20%
Hydrochloric acid
❤2
Class 7 Acids, base and salt
Litmus'a natural dye' is an extract of which of the following
Litmus'a natural dye' is an extract of which of the following
Anonymous Poll
40%
China rose
20%
Beetroot
40%
Lichen
0%
Blue berries
❤2👍1
Class8 Synthetic fibres and plastic
Which of the following is not a thermoplastic polymer?
Which of the following is not a thermoplastic polymer?
Anonymous Poll
40%
Polyster
20%
Polyvinyl chloride
40%
Melamine
0%
Nylon
👍3
Class 7 Heat
How is a clinical thermometer held?
How is a clinical thermometer held?
Anonymous Poll
0%
From the bulb
0%
From the tip
100%
From the glass tube
0%
None of the above
❤3
Class 8 Coal and Petroleum
When an oil well is drilled through rocks, what comes out first?
When an oil well is drilled through rocks, what comes out first?
Anonymous Poll
20%
Petroleum
40%
Natural gas
40%
Crude oil
0%
Residual oil
❤2👍1
Class 7 Acids, base and Salt
The chemical name of "oil of Vitrol" is
The chemical name of "oil of Vitrol" is
Anonymous Quiz
0%
Nitric acid
0%
Hydrochloric acid
60%
Potassium hydroxide
40%
Sulphuric acid
❤2👏1
Class 8 Combustion and flame
Which one of the following has the highest calorific value?
Which one of the following has the highest calorific value?
Anonymous Quiz
20%
Kerosene
80%
LPG
0%
Biogas
0%
Petrol
❤2👍1
Class 8 Nutrition in Animals
Which of the following is not a part of digestive system ?
Which of the following is not a part of digestive system ?
Anonymous Quiz
20%
Mouth cavity
80%
Wind pipe
0%
Food pipe
0%
Stomach
❤3
Class 7 Changes Around Us
Rust is chemically
Rust is chemically
Anonymous Quiz
0%
Iron
20%
Iron chloride
60%
Iron oxide
20%
Iron hydroxide
👏3