Correct Answer: 18 cm

Solution :
Given: A circle touches all four sides of a quadrilateral ABCD. AB=18 cm, BC=21 cm and AD=15 cm.
We know that the lengths of tangents drawn from an external point are equal.
Using this we get,
AB + CD = AD + BC
So,

Correct Answer: USSR

Solution : The correct answer is the USSR.

The USSR was the first country to include Fundamental Duties in its Constitution in 1936. The Soviet Constitution of 1936 identified 11 Fundamental Duties of Citizens, including the need to protect the nation, labour, and obey the country's

Correct Answer: Cloud Computing

Solution : The correct answer is Cloud Computing.

Cloud computing is a computer model in which processing, storage and applications are delivered as services across a network, most often the Internet. It enables users to access and use these resources on demand, removing the requirement for

Correct Answer: 1

Solution : Taking dice positions 2 and 3 with 2 as the common face,

Moving clockwise from the common face with 2,

Pairs of opposite faces –

So, the opposite face to the face containing 2 is 1. Hence, the fourth option is correct.

Correct Answer: I was asked to sing a song.

Solution : The correct choice is the fourth option.

Passive voice is the voice in which the object experiences an action rather than the person who performs the action. Hence, the object in the active voice becomes the subject in the

Correct Answer: 15

Solution : The correct option is 15.

The Planning Commission of India, which has now been replaced by the NITI Aayog (National Institution for Transforming India), had divided India into 15 agro-climatic zones. This classification was done to facilitate agricultural planning and development due to the

Correct Answer: 150

Solution : When the price is 60% less than the original cost price,
So, the new cost price = 40% of the original cost price
In this case, profit = 50% of new cost price = 50% of 40% of original cost price = 20% of the

Correct Answer: $283 \frac{1}{2} \pi\ \mathrm{cm}^3$

Solution : Let the radius of the cylinder be $r\ \text{cm}$.
Height, $h$ = 14 cm
Curved surface area of a cylinder $ = 126\pi\ \text{cm}^2$
⇒ $2\pi r h=126\pi$
⇒ $2\pi r×14=126\pi$
⇒ $r=\frac{126}{28}=\frac{63}{14}$
The volume of a cylinder = $\pi r^2h=\pi (\frac{63}{14})^2×14=\pi×\frac{63×9}{2}=283

Correct Answer: Copper and Tin

Solution : The correct option is Copper and Tin.

Bronze is an alloy made largely of copper and tin. Other elements, such as aluminium, silicon and phosphorus, can also be found in trace amounts. Copper and tin proportions in bronze can vary, resulting in

Correct Answer: Hazards

Solution : The correct choice will be the third option.

Perils denote something very dangerous.

Hazards denote a danger or risk.

The meanings of the other options are as follows:

Delights: It means something that gives somebody great pleasure.

Benefits denote an advantage or useful effect