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Class 7 - Science मॉक टेस्ट

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नमूना प्रश्न

Class 10 Science
Which of the following statements about the ozone layer is correct?
A Ozone is converted to oxygen by UV radiation, and CFCs accelerate this process
B Ozone absorbs infrared radiation and heats the stratosphere
C Ozone layer is found in the troposphere and protects from visible light
D Ozone is a pollutant at all altitudes
Class 6 Science
The Sun is a: a) Planet b) Star c) Moon d) Asteroid
A Planet
B Star
C Moon
D Asteroid
Class 8 Science
A thermosetting plastic is one that:
A Can be remelted and reshaped multiple times
B Cannot be remelted once moulded
C Is always transparent
D Dissolves in water
Class 9 Science
Which of the following is a homogeneous mixture?
A Sand and water
B Salt dissolved in water
C Oil and water
D Wood
Class 9 Science
An object weighs 60 N on Earth and 10 N on the Moon. Its mass on the Moon is approximately:
A 6 kg
B 10 kg
C 60 kg
D 1 kg
Class 10 Science
A concave mirror produces a virtual, erect, and enlarged image of an object. The object must be placed:
A At the focus (F)
B Beyond the centre of curvature (C)
C Between the pole (P) and the focus (F)
D At the centre of curvature (C)
Class 7 Science
The normal human body temperature is:
A 30°C
B 32°C
C 37°C
D 42°C
Class 8 Science
Which non-metal is stored in kerosene to prevent dangerous reactions?
A Sulphur
B Phosphorus
C Carbon
D Iodine

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