Correct Answer: INR 650

Solution : Given, A sum of money amounts to INR 767 in 3 years, and to INR 806 in 4 years on simple interest at 6% annum.
Interest for 1 year = 806 – 767 = INR 39
⇒ Interest in 3 years = 39 ×

Correct Answer: 4

Solution : Taking dice positions 1 and 3 with 4 as the common face –

Moving clockwise from the common face with 4 –

Pairs of opposite faces –

So, the opposite face to the face containing 1 is 4. Hence, the fourth option is correct.

Correct Answer: $74.16$

Solution : Given: The distance of the train is 500 m and the length of the platform is 221 m. The time taken by the train is 35 seconds.
We know that, $\text{Speed}=\frac{\text{Distance}}{\text{Time}}$.
Total distance = 500 + 221 = 721 m
$\text{Speed}=\frac{721}{35}$ m/s
To convert m/s

Correct Answer: Neither conclusion I nor II follows

Solution : Let's analyse the conclusions –
Conclusion I: Sujatha's ornament glitters.
According to the statement, all that glitters is not gold. Here, Sujatha wears a gold ornament which may or may not glitter. Therefore, this conclusion doesn't follow.
Conclusion II: Sujatha's

Correct Answer: Zinc

Solution : The correct option is Zinc.

Reactivity in metals is often related to their position in the reactivity series. The reactivity series is a list of metals arranged in order of their tendency to lose electrons and form positive ions. In this series, zinc is

Correct Answer: 2005

Solution : The correct option is 2005

The Kyoto Protocol is an international agreement that sets legally binding goals for industrialised nations to cut their emissions of greenhouse gases to combat climate change. It was enacted in Kyoto, Japan, on December 11, 1997, and became operative from

Correct Answer: 45 and 13, × and +

Solution : Given:
13 − 65 ÷ 45 × 21 + 2 = 82

Replace the given numbers and symbols in the options one by one with the original numbers and symbols in the given equation.
First option: 65 and 13, ×

Correct Answer: 120 cm²

Solution : Given: $d=24$ cm and $h_1+h_2=10$ cm.
The area of the quadrilateral $=\frac{1}{2}\times(h_1+h_2)\times d$ where $d$ and $(h_1+h_2)$ are its diagonals and sum of heights.
So, the area $=\frac{1}{2}\times10\times 24=120$ cm²
Hence, the correct answer is 120 cm².

Correct Answer: held accountable

Solution : The fourth option is the correct choice.

Brought to book refers to reprimanding or requiring someone to explain his conduct.

Hence, the correct meaning of the given idiomatic expression is, held accountable.

Correct Answer: Only I

Solution : I. $K+\frac{1}{K}=12$
Squaring, $(K+\frac{1}{K})^2=12^2$
⇒ ${K}^2+\frac{1}{K^2}+2=144$
⇒ ${K}^2+\frac{1}{K^2}=142$
So the first statement is correct.
II. $({k}^2+\frac{1}{{k}^2})({k}-\frac{1}{{k}})({k}^4+\frac{1}{{k}^4})({k}+\frac{1}{{k}})$
= $({k}^2+\frac{1}{{k}^2})({k}^2-\frac{1}{{k}^2})({k}^4+\frac{1}{{k}^4})$
= $({k}^4-\frac{1}{{k}^4})({k}^4+\frac{1}{{k}^4})$
= $({k}^8-\frac{1}{{k}^8})$
So, the second statement is not correct.
Hence, the correct answer is only I.