Correct Answer: neutron

Solution : The correct option is neutron.

The neutron has the greatest mass among the proton, neutron, electron, and nucleus of hydrogen. The mass of a proton is 1.672621777(74) × 10^-27 kg. The mass of a neutron is 1.674927498(94) × 10^-27 kg. The mass of an electron is 9.1093837015(28) × 10^-31 kg. The mass of a hydrogen nucleus is 1.674927498(94) × 10^-27 kg. A neutron's mass is somewhat larger than that of a proton. An electron's mass is substantially lower than that of a proton or neutron. Because a hydrogen nucleus contains just one proton, its mass is the same as that of a proton.

Correct Answer: cadaverous

Solution : The most appropriate option is the first option.

Explanation: Cadaverous means resembling a corpse, having a deathly or pale appearance. In the context of the sentence, it fits well because it suggests that heavy medications and strong drugs might make a patient look lifeless and unresponsive.

The other options are not correct, as they do not convey the intended meaning of the sentence.

So, the sentence should be: "The heavy medications and strong drugs at the sanatorium will surely turn a patient cadaverous."

Correct Answer: on the recommendation of the Prime Minister

Solution : The correct answer is on the recommendation of the Prime Minister.

The President appoints the council of ministers and gives each member of the council their appropriate portfolios based on the Prime Minister's recommendation. Upon his recommendation, the President may dismiss any minister from the council of ministers. Article 74 of the Indian Constitution grants the Council of Ministers the power to support and counsel the President.

Correct Answer: business cycle

Solution : The correct answer is a business cycle.

The business cycle refers to the short-term contractions and expansions of economic activity. The business cycle is a cyclical pattern of economic expansion and contraction. It is distinguished by intervals of growth and contraction.

Correct Answer: 35°

Solution :
Given: In a cyclic quadrilateral ABCD, $\angle XBC=82°$ and $\angle ADB=47°$.
A cyclic quadrilateral's exterior angle is equal to its opposite interior angle.
So, $\angle XBC= \angle ADC=82°$.
Also, $\angle ADB=47°$
⇒ $\angle BDC=82°-47°$
⇒ $\angle BDC=35°$
Hence, the correct answer is 35°.

Correct Answer: 150

Solution : Let the total wealth be $x$.
The man wills 40% of his wealth to the wife = 40% of $x$ = 0.4$x$
Wealth for the children = $x$ – 0.4$x$ = 0.6$x$
So, the required percentage $=\frac{\text{wealth for children}}{\text{wealth to the wife}} × 100 = \frac{0.6x}{0.4x} ×100 = 150$%
Hence, the correct answer is 150.

Correct Answer: 21

Solution : Given: The numbers are 8, 12, and 14.
Let the fourth proportion be $x$.
So, $8:12::14:x$
⇒ $\frac{8}{12} = \frac{14}{x}$
⇒ $x = \frac{14 \times 12}{8}=21$
Hence, the correct answer is 21.

Correct Answer: Monotonous

Solution : The correct choice is the fourth option.

Monotonous means lacking in variety and interest, being repetitive and dull, which precisely describes the concept of never changing and being boring.

The meanings of other options are as follows:

• Outdated: This term refers to something that is no longer current or fashionable.

• Impractical: This word describes something that is not useful or effective in practice.

• Idealistic: It refers to having high moral or ethical principles.

Therefore, the correct one-word substitute is monotonous.

Correct Answer: (2)

Solution : The correct choice is the second option.

Explanation:

"Both of which are" is the most appropriate choice for the context, providing a clear and idiomatic way to express the idea that both Apple and IBM are in the computer business.

So, the correct sentence would be: "Two of the biggest corporate firms in the world are Apple and IBM, both of which are in the computer business."

Correct Answer: 18 sec

Solution : Distance = length of train = 180 m
Speed of train = 20 m/s
Speed of main = 10 m/s
The direction of both the train and the man is the same.
So, relative speed = 20 - 10 = 10 m/s
Required time = $\frac{180}{10}$ = 18 sec.
Hence, the correct answer is 18 sec.