Correct Answer: A person not reliable in difficult time

Solution : The correct answer is the fourth option.

The idiom "fair-weather friends" refers to people who are supportive and friendly only during good or easy times but are not reliable or supportive during challenging times.

These individuals are like friends

Correct Answer: length and size of the lens

Solution : The correct option is the length and size of the lens.

Telescopes use objective lenses or mirrors to gather and focus light from distant objects. Microscopes use objective lenses to collect light from the specimen and produce a magnified

Correct Answer: 20

Solution : Given:
25 C 21 D 7 B 3 A 4 = ?

After replacing the letters with the mathematical signs, we get –
⇒ 25 − 21 ÷ 7 × 3 + 4
⇒ 25 − 3 × 3 + 4
⇒ 25 − 9

Correct Answer: TXE

Solution : Given:
PTA, QUB, RVC, SWD, ? 

In the above-given series, add 1 to the place value of each letter of the previous letter cluster to obtain the next letter cluster.
PTA→P + 1 = Q; T + 1 = U; A + 1 = B

Correct Answer: Crust

Solution : The correct answer is Crust.

The Earth's interior is divided into three concentric layers: crust, mantle and core. The crust is composed of silicate solids; the mantle contains viscous molten rock; the outer core comprises viscous liquid; and the inner core is made up

Correct Answer: chm

Solution : Given:
aebd_fjgi_koln_

To fill the series we have to divide the series – aebd_ / fjgi_ / koln_
Let's check each option –
First option: cmh; aebdc / fjgim / kolnh (No pattern has been found.)
Second option: chm; aebdc /

Correct Answer: hovered exact

Solution : The correct choice is the second option.

The error in the sentence is the phrase hovered exact. The word exact is an adjective, but in this context, it should be an adverb to describe how the helicopter hovered. So, it needs to

Correct Answer: Nagarjuna Sagar

Solution : The correct option is Nagarjuna Sagar.

Nagarjuna Sagar Dam is constructed across the Krishna River. It is located in the Nalgonda district of Telangana, India. The dam serves multiple purposes, including irrigation, hydroelectric power generation and flood control. The dam is between the

Correct Answer: 21 cm

Solution : The area of a circle is $\pi r^2$, where $r$ is the radius of the circle.
Given that the area = 1386 cm²
$⇒1386 = \frac{22}{7} r^2$
$⇒r^2=441$
$⇒r = 21$
Hence, the correct answer is 21 cm.

Correct Answer: Yamuna

Solution : The correct answer is Yamuna.

The important tributaries of the Yamuna River are Tons, Chambal, Hindon, Betwa, and Ken. Other small tributaries of the Yamuna River include the Giri, Sind, Uttangan, Sengar and Rind. The Yamuna is the second-largest tributary river of the Ganges