Class 9 Science Student Questions

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Showing: Class 9 / Science (314 questions)

by GIANSH GUPTA KHUNDKER · Class 9

During a free-fall, which of the following quantities remains constant for the falling body?

Science Gravitation 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

What happens to the mass of an object when it is taken from the Earth to the Moon?

Science Gravitation 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

Who proposed the planetary laws of motion?

Science Gravitation 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

What is the weight of a body at the center of the Earth?

Science Gravitation 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

The value of the acceleration due to gravity (g) on the surface of the moon is about:

Science Gravitation 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

What happens to the gravitational force between two objects if the distance between them is doubled?

Science Gravitation 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

During heavy physical exercise, a sprinter's leg muscles undergo anaerobic respiration. Select the option that correctly identifies the substance produced in the muscle cells, the location of this pathway inside the cell, and the symptom it triggers.

Science Cell � The Fundamental Unit of Life 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

An experimental drug destroys the Smooth Endoplasmic Reticulum (SER) in a line of mammalian liver cells. Which crucial physiological functions will these liver cells fail to execute?

Science Cell � The Fundamental Unit of Life 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

A newly synthesized protein destined to be secreted outside the cell as an enzyme must travel through the cellular postal system. Select the correct, sequential pathway this protein takes from its origin to its final export.

Science Cell � The Fundamental Unit of Life 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

Which of the following is considered a pure substance?

Science Is Matter Around Us Pure 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

The "Three R’s" that will help us conserve natural resources for long-term use are:

Science Natural Resources 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

Which of the following is an example of a non-renewable resource?

Science Natural Resources 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

Which type of waves is used in SONAR technology?

Science Sound 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

What is the minimum distance from a reflecting surface needed to hear a distinct echo in air (speed of sound about 340 m/s)?

Science Sound 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

What is the approximate audible range of frequencies for the normal human ear?

Science Sound 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

Which of the following quantities determines the loudness of a sound?

Science Sound 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

Sound travels the fastest in which of the following mediums?

Science Sound 0 2 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

Which of the following is the best description of a sound wave?

Science Sound 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

Who formulated the Law of Constant Proportions?

Science Atoms and Molecules 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

The method of removing weeds by hand is scientifically termed as:

Science Improvement in Food Resources 0 0 answers 0%

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