List of practice Questions

A metal rod of length 1 m at 20°C is made up of a material of coefficient of linear expansion \( 2 \times 10^{-5} \, \text{°C}^{-1} \). The temperature at which its length is increased by 1 mm is:
Describe the structure and functions of an antibody.
A fluid has stream line flow through a horizontal pipe of variable cross-sectional area. Then:
If \( n \) small identical liquid drops, each having terminal velocity \( v \), merge together, then the terminal velocity of the bigger drop is:
What is a trophic level? Comment on different types of trophic levels in an ecosystem.
The slope of the graph plotted between the square of the time period of a planet \( T^2 \) and the cube of its mean distance from the sun \( r^3 \) is:
The value of escape velocity \( v_e \) for a planet depends on:
Describe different abiotic and biotic agents of pollination in detail.
Describe the characteristic features of the human genome.
What is an ecological pyramid? Describe different types of ecological pyramids in brief.
When a vehicle moving with kinetic energy \( K \) is stopped in a distance \( d \) by applying a stopping force \( F \), the relation between \( F \) and \( K \) is given by:
A machine gun fires a bullet of mass 25 g with a velocity of 1000 ms\(^{-1}\). If the man holding the gun can exert a maximum force of 100 N on the gun, the maximum number of bullets that he can fire per second is:
Write short notes on the following: Effect of invasive alien species
If the slope of the velocity-time graph of a moving particle is zero, then its acceleration is:
Endangered species and their conservation
The length of the second's hand in a watch is 1 cm. The magnitude of the change in the velocity of its tip in 30 seconds (in cm/s) is:
Add \( 2.7 \times 10^{-5} \) to \( 4.5 \times 10^{-4} \) with due regard to significant figures
Comment upon the following: Infectious diseases
Describe gel electrophoresis technique in brief.
Comment on the following: Auto-immune disease Opioids
Give an example where more than two alleles govern the same character.
Who propounded the chromosomal theory of inheritance?
Name the food chain which begins with dead and decaying organic matter.
Who among the following proposed that evolution of life forms occurred due to use and disuse of organs?
Which of the following is a non-infectious disease?