Correct Answer: lignite

Solution : The correct option is Lignite.

Lignite is often referred to as brown coal because of its brownish-black color and relatively low carbon content compared to other types of coal like bituminous or anthracite. It is considered the lowest rank of coal in terms of carbon

Correct Answer: Rousseau 

Solution : Correct Answer is  Rousseau

Go Back to Nature was Rousseau's rallying cry. The Social Contract Theory, which holds that although men were born free, they lived their entire lives in chains, was advanced by French political philosopher Jean-Jacques Rousseau (1712–1778), who was of Swiss descent.

Correct Answer: Phenylalanine

Solution : The correct option is Phenylalanine.

One necessary amino acid is phenylalanine. High-protein foods contain it. Learning and memory may both be enhanced by it. It might improve mood and attentiveness. Norepinephrine is the neurotransmitter that the body makes using phenylalanine.

Correct Answer: Asia

Solution : Given:
Jaipur, Rajasthan, India, ?

To complete the series, we need to provide a larger geographical region that encompasses India.
Asia has a larger geographical region that encompasses India.
So, the order of the series is like –
Jaipur < Rajasthan < India < Asia

Correct Answer: Predominance of large farms

Solution : The correct answer is Predominance of large farms.

Agriculture in India is not characterised by a predominance of huge farms. Indian agriculture mostly consists on subsistence farming. In this, farmers produce enough food for their families and themselves.
 

Correct Answer: $81x^4-16y^4$

Solution : Given: $(3x-2y)(3x+2y)(9x^2+4y^2)$
$=\{(3x)^2 - (2y)^2\} (9x^2+4y^2)$
$= (9x^2 - 4y^2)(9x^2+4y^2)$
$=(9x^2)^2 - (4y^2)^2 $
$= 81x^4 - 16y^4$
Hence, the correct answer is $81x^4 - 16y^4$.

Correct Answer: 11 p.m.

Solution : The first train travels for 2 hours before the second train starts.
The distance covered in 2 hours = 2 × 75 = 150 km.
The remaining distance between the two trains when the second train starts = 690 – 150 = 540 km.

Correct Answer: the directive principles of state policy

Solution : The correct answer is the directive principles of state policy.

Article 39A of the Indian Constitution, a directive principle of state policy, focuses on the concepts of equal justice, and the provision of free legal help. It requires the state

Correct Answer: unchanged

Solution : The third option is the correct choice.

Unchanged means not altered or modified. In the context of the sentence, it suggests that Aishwarya's optimism remained consistent and steadfast in difficult situations.

The meanings of the other options are as follows:

• Translucent: Allowing light to pass

Correct Answer: 171

Solution : Given:
39 A 3 B 11 C 57 D 29 = ?

Here, A stands for ÷, B stands for ×, C stands for + and D stands for – so the equation will be as follows –
⇒ 39 ÷ 3 × 11 +