Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

[UPSC Civil Services Exam – 2012 Prelims]

(a) Hydrogen, Oxygen, Sodium

(b) Carbon, Hydrogen, Nitrogen

(c) Oxygen, Calcium, Phosphorous

(d) Carbon, Hydrogen, Potassium

Answer: (b)

Explanation:

The origin of life on Earth is believed to be closely linked to the formation of hydrocarbons and hydrocarbon chains from carbon and hydrogen.
These chains are a vital component of cell membranes, which are essential to life.
Additionally, amino acids, the building blocks of proteins, are composed of five elements: carbon, hydrogen, oxygen, nitrogen, and sulfur.
Furthermore, if we replace sulfur with phosphorus, these same five elements also make up nucleic acids such as DNA.
Therefore, option 2 is the correct answer.

Which one of the following Schedules of the Constitution of India contains provisions regarding anti-defection?

The provisions in Fifth Schedule and Sixth Schedule in the Constitution of India are made in order to

The provisions in Fifth Schedule and Sixth Schedule in the Constitution of India are made in order to [UPSC Civil Services Exam – 2015 Prelims]

Consider the following statements: The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:

Consider the following statements: The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:

Under which Schedule of the Constitution of India can the transfer of tribal land to private parties for mining be declared null and void?

Under which Schedule of the Constitution of India can the transfer of tribal land to private parties for mining be declared null and void? [UPSC

The Ninth Schedule was introduced in the Constitution of India during the prime ministership of

The Ninth Schedule was introduced in the Constitution of India during the prime ministership of [UPSC Civil Services Exam – 2019 Prelims] (a) Jawaharlal Nehru

Categories

Which one of the following Schedules of the Constitution of India contains provisions regarding anti-defection?

The provisions in Fifth Schedule and Sixth Schedule in the Constitution of India are made in order to

Under which Schedule of the Constitution of India can the transfer of tribal land to private parties for mining be declared null and void?

The Ninth Schedule was introduced in the Constitution of India during the prime ministership of

Useful Links

Download
Neyyar App

Categories

Which one of the following Schedules of the Constitution of India contains provisions regarding anti-defection?

The provisions in Fifth Schedule and Sixth Schedule in the Constitution of India are made in order to

Under which Schedule of the Constitution of India can the transfer of tribal land to private parties for mining be declared null and void?

The Ninth Schedule was introduced in the Constitution of India during the prime ministership of

Useful Links

Download Neyyar App

Download
Neyyar App