MEDIUM
9th CBSE
IMPORTANT
Earn 100

A sound wave travels at a speed of 339 m/s. If its wavelength is 1.5 cm, then what is the frequency of the wave? Will it be audible?

Important Questions on Periodic Tests

EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Pre-Mid Term Tests>Q 1
16 g of a solute is dissolved in 100 ml of water to form a saturated solution at 25°C. The strength of the solution (in gL-1), will be equal to
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Pre-Mid Term Tests>Q 2
Which one of the following organelles is the site for ATP synthesis?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Pre-Mid Term Tests>Q 3
Which instrument is used to measured the distance travelled by vehicle?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Pre-Mid Term Tests>Q 4
Name the physical quantity which corresponds to the rate of change of momentum.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Pre-Mid Term Tests>Q 5
Differentiate between chloroplast and leucoplast by function.
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Pre-Mid Term Tests>Q 6
Give an example of gas in liquid solution.
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Pre-Mid Term Tests>Q 6
Give an example of gas in gas solution.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 16 - Periodic Tests>Pre-Mid Term Tests>Q 7
For how much time should a force of 200 N acts on an object having mass 5 kg, so as to increase its velocity from 50 m/s to 100 m/s?