Correct Answer: 216 seconds

Solution : Given: A train 1800 m long, travelling at the speed of 30 km/hr.
Convert km/hr into m/s by multiplying it with $\frac{5}{18}$.
⇒ 30 km/hr = 30 × $\frac{5}{18}$ = $\frac{25}{3}$ m/s
Now, $\text{Time}=\frac{\text{Distance}}{\text{Speed}}$
So, the time in which a train passes a signal

Correct Answer: 12.5%

Solution : Let's the cost price of the desktop as $C$, the profit as $P$, and the selling price as $S$
Selling Price = Cost Price + Profit
⇒ $S = 9P$
⇒ $C + P = 9P$
⇒ $C = 8P$
So, Profit % = $\frac{Profit}{Cost

Correct Answer: Conversion of neutrons into protons

Solution : The correct answer is the Conversion of neutrons into protons.

The release of an enormous amount of energy in an atomic bomb explosion is caused by the conversion of neutrons into protons. When a neutron collides with the nucleus of

Correct Answer: autoradiography

Solution : The correct answer is autoradiography.

One technique used to trace radioactive elements in living cells is autoradiography. Autoradiography is a method that involves exposing a photographic film, or other detector to a specimen containing radioactive isotopes. The emitted radiation exposes the film, creating a

Correct Answer: Law and Justice

Solution : The correct answer is Law and Justice.

The Election Laws (Amendment) Bill 2021 belongs to the Law and Justice Ministry of India. This bill seeks to link electoral rolls with Aadhaar to remove fake voters from the list. This ministry is in

Correct Answer: fires in California is

Solution : The error lies in the third option.

The subject fires is plural, so the verb should also be plural to maintain subject-verb agreement. In the original sentence, is (singular) is used instead of are (plural). The corrected version ensures subject-verb agreement by

Correct Answer: I am willing to consider the possibility

Solution : The correct choice is the first option.

• The sentence with no spelling error is: I am willing to consider the possibility.
• The second option contains the incorrect spelling "considerr", whereas the correct spelling is consider.
• The third

Correct Answer: Magnesium

Solution : The correct option is Magnesium.

The chlorophyll pigment is present in cell organelles known as chloroplasts. These chloroplasts serve as a site for photosynthesis. Chlorophyll is a porphyrin derivative. It has a magnesium atom in the centre, and four nitrogen atoms surround it. A

Correct Answer: Temple entry movement

Solution : The correct option is Temple entry movement.

In 1927, B. R. Ambedkar initiated the Temple entry movement to fight against caste-based discrimination. It aimed to secure the right of Dalits to enter Hindu temples, challenging the prevailing social norms. Ambedkar's efforts laid the

Correct Answer:

Solution : According to the given figures –
1. The × sign moves two spaces (each space is equal to half-a-side of the square boundary) and one space anticlockwise alternately.
2. The ÷ sign moves one space (each space is equal to half-a-side of the square boundary) and