Correct Answer: 52 cm²

Solution : Length of one diagonal ($d_1$) = 8 cm
Length of the other diagonal ($d_2$) = 13 cm
We know, the area ($A$) of a Rhombus = $\frac{1}{2}d_1d_2=\frac{1}{2}$× 8 × 13 = 52 cm²​​​​​​
Hence, the correct answer is 52 cm²

Correct Answer: 4 : 7

Solution : Given: The ratio of copper and tin in the first alloy is 1 : 3.
And in the second alloy is 2 : 5.
Let the alloys be mixed in the ratio of $x:y$.
Copper in first alloy = $\frac{x}{4}$
Tin in first

Correct Answer: 11

Solution : The given figure can be labelled as shown below –

In the above-labelled figure, there are a total of 11 quadrilaterals. They are ABJH, BCIJ, ACIH, HIFG, ACFG, CDEF, ABJG, BJFC, GJIF, GHJF, ADEG.

Hence, the first option is correct.

Correct Answer: To be extremely surprised

Solution : The correct choice is the fourth option.

Jumping out of one's skin means to get extremely startled or frightened, which is given in the fourth option.

Correct Answer: $\frac{169}{60}$

Solution : Given that $\cos A = \frac{5}{13}$,
So, $\sin A = \sqrt{1 - \cos^2 A} = \sqrt{1 - \left(\frac{5}{13}\right)^2} = \frac{12}{13}$
$⇒\tan A = \frac{\sin A}{\cos A}$ and $\cot A = \frac{1}{\tan A}$
$⇒\tan A = \frac{\sin A}{\cos A} = \frac{12}{5}$
$⇒\cot A = \frac{1}{\tan A}

Correct Answer: Rate of flow of liquids

Solution : The correct answer is the Rate of flow of liquids.

A venturi Meter is a device that is used to measure the flow speed of a liquid in a pipe. The venturi Meter function is based on Bernoulli's equation. It is

Correct Answer: New seeds are made through pollination.

Solution : The correct choice is the third option. 

Explanation: The word in the question is pollination.

In the first option, there is a spelling error, as "sieds" must be spelt as "seeds".
In the second option, there is a

Correct Answer: Blandness

Solution : The correct choice is the fourth option.

Blandness means lack of strong emotions, boringness, etc., and pleasure is the synonym for joy.

The meanings of the other options are as follows:

• Inadequacy is the lack of quantity or quality of something.
• Joy is the feeling

Correct Answer: Only II

Solution : Let the ages of the two girls be $3x$ and $4x$ years respectively.
According to the question,
$\frac{3x+2}{4x+2}=\frac{7}{9}$
⇒ $27x+18=28x+14$
⇒ $x=4$
Their ages are 12 years and 16 years respectively.
Ratio of their ages after 10 years = (12 + 10) : (16

Correct Answer: President

Solution : The correct option is President.

The President of India appoints the Comptroller and Auditor General (CAG). The CAG is appointed on the Prime Minister's proposal after consultation with different authorities, including the Speaker of the Lok Sabha, the Chairman of the Rajya Sabha, and