Science Student Questions

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Showing: All Grades / Science (1380 questions)

by GIANSH GUPTA KHUNDKER · Class 8

Which of the following is an example of a non-contact force?

Science Force and Pressure 0 5 answers 100%
by GIANSH GUPTA KHUNDKER · Class 8

A key to identifying a sound source is that it must be:

Science Sound 0 3 answers 100%
by GIANSH GUPTA KHUNDKER · Class 8

Which part of the human ear vibrates to produce electrical signals to the brain?

Science Sound 0 6 answers 33%
by GIANSH GUPTA KHUNDKER · Class 8

What makes sound travel through a medium?

Science Sound 0 5 answers 60%
by GIANSH GUPTA KHUNDKER · Class 8

What is the minimum distance required for a distinct echo to be heard, assuming the speed of sound is 340m/s?

Science Sound 0 3 answers 67%
by GIANSH GUPTA KHUNDKER · Class 8

If the amplitude of a sound wave is increased, which of the following happens?

Science Sound 0 5 answers 60%
by GIANSH GUPTA KHUNDKER · Class 8

The pitch of a sound depends directly on its:

Science Sound 0 7 answers 86%
by GIANSH GUPTA KHUNDKER · Class 8

In which of the following media does sound travel the fastest?

Science Sound 0 6 answers 50%
by ADWIT KUMAR · Class 3

Which is the longest cell in human body ?

Science Human Body 0 8 answers 63%
by Y.JESSICA GEONA RAJ · Class 7

Three objects have densities: A = 0.7 g/cm3, B = 1.2 g/cm3, C = 0.95 g/cm3. Which will float in water?

Science Other 0 3 answers 33%
by Y.JESSICA GEONA RAJ · Class 7

Assertion (A): All liquids take the shape of their container. Reason (R): Liquids flow because their particles are loosely packed.

Science Other 0 4 answers 75%
by Y.JESSICA GEONA RAJ · Class 7

Assertion (A): Mass remains constant in a closed system. Reason (R): Matter cannot be created or destroyed.

Science Other 0 4 answers 50%
by Y.JESSICA GEONA RAJ · Class 7

Assertion (A): Sugar dissolves faster in hot water. Reason (R): Heating increases the speed of water particles.

Science Other 0 3 answers 33%
by Y.JESSICA GEONA RAJ · Class 7

Which of the following is an example of sublimation seen in daily life?

Science Other 0 4 answers 50%
by Y.JESSICA GEONA RAJ · Class 7

Ravi added 10 g sugar to 100 mL water. It dissolved fully. He added more sugar until no more could dissolve. The point at which no more sugar dissolves is called:

Science Other 0 4 answers 50%
by Y.JESSICA GEONA RAJ · Class 7

A piece of metal sinks in water but floats in mercury. This shows that:

Science Other 0 3 answers 67%
by Y.JESSICA GEONA RAJ · Class 7

A stone is placed in water. The water level increases. This is because:

Science Other 0 4 answers 100%
by Y.JESSICA GEONA RAJ · Class 7

When 10g of salt is completely dissolved in 100g of water, the resulting salt solution will have a mass of:

Science Other 0 3 answers 33%
by Y.JESSICA GEONA RAJ · Class 7

Which of the following mixtures is best separated by filtration?

Science Other 0 5 answers 0%
by Y.JESSICA GEONA RAJ · Class 7

The point at which no more sugar dissolves is called:

Science Other 0 3 answers 67%

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