Correct Answer: geothermal energy

Solution : The correct option is geothermal energy.

Geothermal energy is energy that can be produced by using heat that is stored under the earth's surface. This type of energy is obtained from the Earth's interior's inherent heat, which comes from the radioactive decay of minerals

Correct Answer: 1

Solution : Given: $\left(\operatorname{cosec}^2 B-1\right)\left(\sec ^2 B-1\right)$
We know that
$\operatorname{cosec}^2 B = 1 + \cot^2 B$
$\sec^2 B = 1 + \tan^2 B$
$\left(\operatorname{cosec}^2 B-1\right)\left(\sec ^2 B-1\right) = \cot^2 B\times\tan^2 B$.
$=\cot^2 B \times \tan^2 B = \frac{1}{\tan^2 B}\times\tan^2 B = 1$
Hence, the correct answer

Correct Answer: baab

Solution : Given:
a b _ a _ b b a _ _ b a

To fill the series we have to divide the series – a b _ a \ _ b b a \ _ _ b a

Let's check each option –
First option: 

Correct Answer: Permanent

Solution : The first option is the correct choice.

The adjective perpetual means never-ending or changing. Permanent means lasting or enduring indefinitely, not temporary or transitory.

The meanings of the other options are as follows:

• Extreme: characterised by a high degree of intensity.
• Brief: short

Correct Answer: How should the goods be exchanged?

Solution : The correct answer is How should the goods be exchanged.

The question "How should the goods be exchanged?" is not explicitly one of the fundamental questions every society needs to answer. Instead, societies commonly address what to produce, how

Correct Answer: 132

Solution : From the given graph,
The total number of boys from all the departments = 60 + 220 + 100 + 160 + 120 = 660
The total number of departments = 5
The average number of boys from all the departments
$=\frac{\text{The total number of

Correct Answer: 1

Solution : Given: $x^{2}+\frac{1}{x^{2}} = 1$
Adding 2 on both sides, we get,
$x^{2} + \frac{1}{x^{2}} + 2 = 1 + 2$
⇒ $x^{2} + \frac{1}{x^{2}} + 2×x^2×\frac{1}{x^{2}} = 3$
⇒ $(x + \frac{1}{x})^{2} = 3$
$x + \frac{1}{x} = \sqrt3$
Cubing both sides, we get,
⇒

Correct Answer: 12th Oct,2005

Solution : The correct answer is 12th October 2005.

The RTI Act was promulgated in 2005 to promote transparency and accountability in the workings of every public authority. The RTI Act empowers the citizens of the country to question authority. This Act gives citizens access to

Correct Answer: Tuesday

Solution : Given:
18 September 1998 is a Friday.

Let's calculate the total number of days from the 18th of September 1998 to the 15th of September 2009 –

Number of remaining days in 1998 = 12 + 31 + 30 + 31 = 104
Number of

Correct Answer: Goddess Parvati

Solution : The correct option is Goddess Parvati.

The Gangaur festival, primarily celebrated in Rajasthan and some parts of central and western India, is dedicated to Goddess Gauri. Gauri is considered a manifestation of Goddess Parvati, the consort of Lord Shiva, in Hindu mythology.