Correct Answer: 5 hours and 30 minutes

Solution : The correct option is 5 hours and 30 minutes.

Indian Standard Time is 5 hours and 30 minutes ahead of Greenwich Mean Time. The Royal Observatory in Greenwich, London, keeps track of mean solar time, or GMT, starting at midnight. The

Correct Answer: Magnetic fields of the earth

Solution : The correct answer is the magnetic fields of the earth

Ocean currents can be caused by the Coriolis force, density differences in water caused by temperature and salinity variations, gravity, and heating by solar energy & wind, but the magnetic fields

Correct Answer: Only I

Solution : The correct answer is only I.

Solstice is the day when the Earth is tilted to its maximum towards the Northern or Southern side. In the Northern Hemisphere, the Winter Solstice is usually observed on December 21 or 22, whereas the summer solstice

Correct Answer: Bibliography

Solution : The first option is correct.

The most appropriate one-word substitution for the given group of words a list of source materials that are used or consulted in the preparation of a work or that are referred to in the text is bibliography.

A bibliography

Correct Answer: 126 km

Solution : The speed of a boat in still water = 20 km/hr
Speed of river = 8 km/hr
Upstream speed = 20 – 8 = 12 km/hr
Downstream speed = 20 + 8 = 28 km/hr
Let $x$ be the distance.
Time taken to cover

Correct Answer: $\frac{5}{1512}$

Solution : Let the number be 81$x$ and 81$y$ 
 81$x$ + 81$y$ = 1215
⇒ $x + y = \frac{1215}{81}$ = 15
 Pair of $x+ y$ = (1,14), (2,13), (4,11), and (7,8)
⇒ $x = 7$ and $y = 8$
First number = 81 × 7 =

Correct Answer: 461.58 cubic feet

Solution : The volume $V$ of a cone, where $r$ is the radius and $h$ is the height.
$V = \frac{1}{3} \pi r^2 h$
$= \frac{1}{3} \times 3.14 \times (7)^2 \times 9$
$= 461.58$
Hence, the correct answer is 461.58 cubic feet.

Correct Answer: 12

Solution : Given:
1, 5, ?, 22, 35

The difference between each consecutive term is increasing by 3 –
1 + 4 = 5
5 + (4 + 3) = 5 + 7 = 12
12 + (7 + 3) = 12 + 10 = 22
22

Correct Answer: 2,544

Solution : Let P be the principal.
We know, $\text{Total Amount}=\text{Principal}×(1+\frac{\text{Rate}}{100})^{\text{Time}}$
$\text{P}(1 +\frac{r}{100})^4$ = 7562 -----------------(1)
$\text{P}(1 +\frac{r}{100})^5$ = 8469.44  -------------(2)
Dividing (2) by (1) we get,
$(1 +\frac{r}{100}) = \frac{846944}{756200}$
$⇒\frac{r}{100} = 1.12 - 1$
$\therefore r = 12$
Compound Interest $=10,000 × [(1 + \frac{12}{100})^2

Correct Answer: 32.9 m

Solution :
Given, AB = 45 m
In $\triangle$ABC
$\tan$ 45° = $\frac{\text{AB}}{\text{BC}}$
⇒ 1 = $\frac{45}{\text{BC}}$
⇒ BC = 45 m
In $\triangle$ABD
$\tan 30° = \frac{\text{AB}}{\text{BD}}$
⇒ $\frac{1}{\sqrt{3}} = \frac{45}{\text{BD}}$
⇒ BD = $45\sqrt{3}$
Also, BD = CD + BC
⇒ $45\sqrt{3}$ = CD