Physics
A ball is thrown up in the sky. After reaching a height, the ball falls back. What can be said about the average velocity?
a) It is non zero
b) It is zero
c) It is greater than zero
d) It is less than zero
b) It is zero
Among the given nutrients, milk is a poor source of
A) Calcium
B) Protein
C) Vitamin c
D) Carbohydrates
C) Vitamin c
Which of the following groups of amino acids are least soluble in water?
a) Polar
b) Non-polar
c) Polar charged
d) Polar uncharged
b) Non-polar
The kinetic energy of a body is ‘K’. If one-fourth of its mass is removed and velocity is doubled, the new kinetic energy will be …..
a) K
b) 3K
c) 4K
d) 9K/4
b) 3K
Which of the following is considered responsible for global warming?
A) Greenhouse effect
B) Dry farming
C) Fire in coal mines
D) Trade winds
A) Greenhouse effect
How many types of nucleotides are present in DNA?
a) 1
b) 2
c) 3
d) 4
d) 4
What happens to the average velocity when a body falls under gravity with terminal velocity?
a) It increases
b) It decreases
c) It remains constant
d) It changes exponentially
c) It remains constant
Glass is made of the mixture of
A) Quartz and mica
B) Sand and salt
C) Sand and silicates
D) None of these
C) Sand and silicates
Which of the following is known as the suicide bag of a cell?
a) Mitochondria
b) Golgi Complex
c) Lysosome
d) Nuclei
c) Lysosome
The first condition of equilibrium of a body is ___
a) Sum of all force on a body should be zero
b) Sum of all moments on a body should be zero
c) Sum of the initial and final force should be zero
d) Relative difference of forces should be zero
a) Sum of all force on a body should be zero
Which among the following oxides cause the Acid rain?
A) Carbon monoxide and carbon dioxide
B) Nitrous oxide and sulphur dioxide
C) Carbon dioxide and nitrous oxide
D) Sulphur dioxide and carbon monoxide
B) Nitrous oxide and sulphur dioxide
Which of the following steroids is a precursor of hormones such as testosterone, progesterone and estrogen?
a) Collagen
b) Glycogen
c) Cholesterol
d) Glycerol
c) Cholesterol
Why is mercury used in thermometers?
a) It volume is proportional to square of increase of temperature
b) It shows linear variation in volume with temperature
c) Its volume remains constant with temperature
d) Its volume decreases with increase in temperature
b) It shows linear variation in volume with temperature
The acid present in lemon is
A) lactic acid
B) marlic acid
C) citric acid
D) tartaric acid
C) citric acid
Johne’s disease is a type of ___ disease in animals.
A) Intestine
B) Liver
C) Fetus and uterus
D) Blood
A) Intestine