Question 1

Which of the following is not an endocrine gland?
A)Salivary gland
B)Pituitary gland
C)Thyroid gland
D)Adrenal gland

Accepted Answer

The salivary gland is not an endocrine gland; it is an exocrine gland because it releases its secretions through ducts into the oral cavity, unlike endocrine glands which secrete hormones directly into the bloodstream.

Question 2

Two rods of same material and length have their electric resistance to ratio 1 : 2. When both rods are dipped in water, the correct statement will be
A)A has more loss of weight
B)B has more loss of weight
C)Both have same loss of weight
D)Loss of weight will be in the ratio 1 : 2

Accepted Answer

When both rods are dipped in water, the loss of weight due to buoyancy is determined by the volume of the rods submerged in water, not their electrical resistance. Since the rods are of the same material and length, they displace the same volume of water, leading to the same loss of weight due to buoyancy, regardless of their electrical resistance differences.

Question 3

The temperature of the Sun is measure with
A)platinum thermometer
B)gas thermometer
C)pyrometer
D)vapour pressure thermometer

Accepted Answer

Pyrometers are used to measure very high temperatures, such as those found on the surface of the Sun, because they can measure temperatures from a distance without being in direct contact with the object being measured.

Question 4

In case of uniform circular motion, which of the following physical quantity do not remain constant?
A)Speed
B)Momentum
C)Kinetic energy
D)Mass

Accepted Answer

In uniform circular motion, although the speed of the object remains constant, its direction changes continuously. Since momentum is a vector quantity that depends on both the magnitude and direction of velocity, the changing direction of velocity means that the momentum of the object is not constant.

Question 5

Inertia is that property of a body by virtue of which the body is
A)unable to change by itself the state, the rest
B)unable to change by itself the state of uniform motion
C)unable to change by itself the direction of motion
D)unable to change by itself the state of rest and of

Accepted Answer

The answer of Inertia is that property of a body...

Question 6

A rider on horse back falls when horse starts running all of a sudden because
A)rider is taken back
B)rider is suddenly afraid of falling
C)inertia of rest keeps the upper part of body at rest whereas lower part of the body moves forward with the horse
D)None of the above

Accepted Answer

The correct answer is C because when the horse suddenly starts running, the lower part of the rider's body moves forward with the horse due to being in contact with it, while the upper part of the body tends to remain at rest due to inertia of rest. This discrepancy in motion between the upper and lower parts of the body can cause the rider to fall.

Question 7

A person is standing in a elevator. In which situation, he finds his weight less than actual when
A)the elevator moves upward with constant acceleration
B)the elevator moves downward with constant acceleration
C)the elevator moves upward with uniform velocity
D)the elevator moves downward with uniform velocity

Accepted Answer

When the elevator moves downward with constant acceleration, the effective acceleration due to gravity acting on the person decreases. This results in a decrease in the apparent weight of the person.

Question 8

Which of the following is not a chemical reaction?
A)Souring of milk
B)Rusting of iron
C)Dissolution of sugar in water
D)Digestion of food in our body

Accepted Answer

Dissolution of sugar in water is a physical change, not a chemical reaction, because it involves a change in state (solid to solution) without altering the chemical composition of the sugar.

Question 9

The physical state of water at 100°C is
A)solid
B)liquid
C)gas
D)plasma

Accepted Answer

At 100°C, water is in its liquid state.

Question 10

Which of the following characteristics are associated with gaseous state?
A)Definite shape, compressible, fixed volume
B)Incompressible, fixed shape and size
C)No fixed shape and size, highly compressible
D)Fixed shape, incompressible, closely packed

Accepted Answer

Gases have no fixed shape or size and are highly compressible, allowing them to fill their containers fully.

Question 11

A gas can be liquefied by
A)lowering the temperature
B)increasing the temperature
C)increasing the pressure
D)increasing the pressure and lowering the temperature

Accepted Answer

Increasing the pressure and lowering the temperature are both effective methods for liquefying a gas. When both are applied together, they can efficiently overcome the kinetic energy of gas molecules, bringing them closer to form a liquid. This combination is the most effective way to liquefy gases, especially those that require conditions beyond normal atmospheric pressures and temperatures to change state.

Question 12

The term 'rancidity' represents
A)acid rain
B)oxidation of fatty food
C)rottening of fruit
D)fading of coloured clothes in the sun

Accepted Answer

Rancidity refers to the process where fats and oils in food items undergo oxidation, leading to an unpleasant smell and taste.

Question 13

Evaporation of liquid occur at
A)boiling point
B)fixed temperature lower than the boiling point
C)all temperature
D)None of the above

Accepted Answer

Evaporation of liquid can occur at all temperatures, not just at the boiling point. It happens when molecules at the surface of the liquid gain enough energy to overcome the intermolecular forces and escape into the gas phase. This process can occur at any temperature, although the rate of evaporation increases with temperature.

Question 14

Largest part of the brain of human being is called
A)olfactory lobe
B)cerebral hemisphere
C)corpus callosum
D)optic nerve

Accepted Answer

The cerebral hemisphere constitutes the largest part of the human brain, encompassing areas responsible for processing sensory information, motor functions, language, reasoning, and memory.

Question 15

Which part of human brain is more developed in comparison to others?
A)Cerebrum
B)Cerebellum
C)Optic lobes
D)Medulla oblongata

Accepted Answer

The cerebrum is the largest part of the human brain and is responsible for higher brain functions such as thought and action. It is more developed in humans compared to other parts of the brain and other species, which is why humans have advanced cognitive abilities.

Question 16

Hearing is controlled by
A)tyemporal lobes
B)cerebrum
C)hypothalamus
D)parietal lobe

Accepted Answer

The answer of Hearing is controlled by
A)tyemporal lobes
B)cerebrum
C)hypothalamus
D)parietal lobe...

Question 17

Example of analogy is
A)wings of bird and butterfly
B)limbs of horse and man
C)wings of bat
D)None of the above

Accepted Answer

Analogies are comparisons between two things that are similar in some way. The wings of a bird and a butterfly serve the same function (flight) but are structurally different, making them an example of analogy.

Question 18

Removal of anthers from flowers is the process which is known as
A)emasculation
B)breeding
C)manuring
D)fallowing

Accepted Answer

Emasculation is the process of removing anthers from flowers to prevent self-pollination, often used in plant breeding to control the parentage of the offspring.

Question 19

Improved variety of paddy (rice) is
A)Ranjit
B)Sonalika
C)Ganga 101
D)Pusa 215

Accepted Answer

The answer of Improved variety of paddy (rice) is
A)Ranjit
B)Sonalika
C)Ganga 101
D)Pusa...

Question 20

Which one of the following crop doesn't required more nitrogen fertilizers?
A)Maize
B)Paddy
C)Clover (Berseem)
D)Sugarcane

Accepted Answer

Clover (Berseem) is a leguminous plant that has the ability to fix atmospheric nitrogen through symbiotic bacteria (rhizobia) in its root nodules, reducing its need for nitrogen fertilizers compared to non-leguminous crops like maize, paddy, and sugarcane.

Quiz 12: Brain Functions, Plant Processes, and Agricultural Practices

Which of the following is not an endocrine gland?

Two rods of same material and length have their electric resistance to ratio 1 : 2. When both rods are dipped in water, the correct statement will be

The temperature of the Sun is measure with

In case of uniform circular motion, which of the following physical quantity do not remain constant?

Inertia is that property of a body by virtue of which the body is

A rider on horse back falls when horse starts running all of a sudden because

A person is standing in a elevator. In which situation, he finds his weight less than actual when

Which of the following is not a chemical reaction?

The physical state of water at 100°C is

Which of the following characteristics are associated with gaseous state?

A gas can be liquefied by

The term 'rancidity' represents

Evaporation of liquid occur at

Largest part of the brain of human being is called

Which part of human brain is more developed in comparison to others?

Hearing is controlled by

Example of analogy is

Removal of anthers from flowers is the process which is known as

Improved variety of paddy (rice) is

Which one of the following crop doesn't required more nitrogen fertilizers?