Correct Answer:

 Sarojini Naidu

Solution : The correct answer is Sarojini Naidu.

Sarojini Naidu was the first female Governor of a state in independent India. She served as the Governor of the United Province from 1947 to 1949. Sucheta Kripalani was the country's first woman Chief Minister and held the position of Chief Minister of the Uttar Pradesh Government from 1963 to 1967. Indira Gandhi was India's first female Prime Minister. Vijaya Lakshmi Pandit was the first woman to hold the position of President of the United Nations General Assembly.

Correct Answer: 37.6

Solution : Number of families whose monthly expenditure on education is INR 2500 or more but below INR 4000 = 47 + 55 + 70 = 172
Number of families whose monthly expenditures on education are INR 4500 or more but below INR 6000 = 52 + 43 + 30 =125 
Required percentage gain = $\frac{172 - 125}{125}\times 100\% = 37.6\%$
Hence, the correct answer is 37.6.

Correct Answer: 63

Solution : According to the question
Total employees = 450
⇒ number of employees in department B_​ = $\frac{14}{100}$ ​× 450_​
= 0.14 × 450 = 63
Hence, the correct answer is 63.

Correct Answer: 8

Solution : (72 × 73 × 78 × 76) divided by 35
We divide every number individually by 35, then the total remainder is also divided by 35 to get the required remainder.
$\frac{(72 × 73 × 78 × 76)}{35}$
⇒ $\frac{(2 × 3 × 8 × 6)}{35}$
⇒ $\frac{288}{35}$
⇒ $\frac{8}{35}$
Since 8 cannot be divided further by 35
$\therefore$ The required remainder is 8.
Hence, the correct answer is 8.

Correct Answer: 86%

Solution : Number of employees in the marketing department = $\frac{24}{100} \times 800$ = 192
Number of male employees = 165.
∴ Required percentage = $\frac{165}{192} \times 100$ = 85.93% ≈ 86%
Hence, the correct answer is 86%.

Correct Answer: $71 \frac{3}{7} \%$

Solution : According to the question,
Percentage Increase
$= \frac{\text{New Value−Old Value}}{\text{Old Value}} × 100$
$= \frac{12000 − 7000}{7000} × 100$
$= \frac{5000}{7000}× 100$
$ = 71\frac{3}{7}\%$
Hence, the correct answer is $71\frac{3}{7}\%$.

Correct Answer: Alfred Werner

Solution : The correct answer is Alfred Werner.

Alfred Werner's theory propounded that the ions/groups bonded to the metal by secondary bonding have spatial arrangements corresponding to different characteristic coordination numbers. This theory states that the transition metal cation will have two valencies: a primary and a secondary. Alfred Werner won the Nobel Prize in chemistry in 1913.

Correct Answer: 21 : 32

Solution : The number of families whose monthly expenditure on education is below Rs. 3000 is
= 23 + 35 + 47
= 105
The number of families whose monthly expenditure on education is Rs. 4,000 or above but less than Rs. 5,500 is
= 65 + 52 + 43
= 160
Required ratio = 105 : 160
= 21 : 32
Hence, the correct answer is 21 : 32.

Correct Answer:

Solution : In the given series, the figure is rotating 90° anticlockwise. Also, the right-angled triangle is moving clockwise at the corners.
Thus, the missing part of the figure is –

Therefore, the complete figure is as follows – 

Hence, the third option is correct.

Correct Answer: 24 : 4

Solution : Let's check each option –

First option: 34 : 3; 34 is not divisible by 3.
Second option: 17 : 6; 17 is not divisible by 6.
Third option: 24 : 4; 24 is divisible by 4.
Fourth option: 2 : 51; 51 is not divisible by 2.

So, the third option is different from the other three options as here first term is divisible by the second term.  Hence, the third option is correct.