List of practice Questions

Radio waves transmitted from the earth are reflected back to the earth from this layer of the atmosphere
The religion that is also called as the ‘Great Middle Path’ is
In humans, the urea synthesis occurs in
Which deficiency in diet is responsible for accumulation of water in the body?
When energy flows from one trophic level to the other, then its quantity
Identify the ecological pyramid which is generally inverted in a marine ecosystem is
Removal of toxic heavy metals from contaminated soils by using fungi is known as
Which one of the following is an abiotic component of an ecosystem?
In any electrical circuit, the direction of flow of current is
Match the following:
If a solid cube of 7 kg having an edge of length 10 cm floats in water, then the volume of the cube outside of the water is (let the density of the water 1000 kg/m³.)
This vitamin is essential for the health of the eye.
In the process of food preservation, the main purpose of refrigerating food is
Identify the CORRECT sequence of subphases given below in the prophase of Meiosis I.
Match the following characteristics with their respective animal Phyla.
Pseudocoelom
A displacement-time graph shown below represents
displacement-time graph
A person can hear a sound of frequency
Which of the following statements are correct?
(i) Velocity of sound waves is greater in solids than liquids.
(ii) Velocity of sound waves in vacuum is 330 m/s.
(iii) Sound waves are longitudinal waves.
(iv) Velocity of sound waves in vacuum is zero.
Which planet's rotation is different from the earth’s rotation?
According to Bohr model, the maximum number of electrons occupying M-shell will be
Which of the following is a set of homogeneous mixtures?
1. Air
2. Mist
3. Sugar solution
4. Milk
Find the volume of the cuboid if length is 12 cm, breadth is 8 cm and height is 10 cm? (in cubic cm)
Evaluate: \[ \sqrt{\sin^4 x + 4\cos^2 x} - \sqrt{\cos^4 x + 4\sin^2 x} = ? \]
How many spherical balls can be made out of a solid cube of iron whose edge measures 44 cm and each ball being 4 cm in diameter? (Take \( \pi = \frac{22}{7} \))
Among the following, the correct picture representation of the number of school teachers in Delhi is:
picture representation of the number of school teachers in Delhi