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Q.Arrange the following events in a chronological order :

(i) Atomic test conducted by China
(ii) First nuclear explosion conducted by India
(iii) Implementation of Nuclear Non-Proliferation Treaty
(iv) Initiation of the atomic programme in India under the guidance of Homi Jehangir Bhabha Choose the correct option : (A) (ii), (iii), (i),
(iv) (B) (iv), (i), (iii),
(ii) (C) (i), (iii), (iv),
(ii) (D) (iv), (iii), (ii), (i)
CBSECBSE Class XII Board 2026MCQ· 1mImportance★★★★★
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The correct chronological order of these events is the initiation of India's atomic program, followed by China's atomic test, then the implementation of the NPT, and finally India's first nuclear explosion.

The mid-20th century marked a pivotal era in global politics, characterized by the Cold War and the proliferation of nuclear weapons technology. Nations grappled with the implications of this destructive power, leading to both independent nuclear development and international efforts to control it. India, under the leadership of its early prime ministers, adopted a unique stance, advocating for peaceful uses of nuclear energy while reserving its sovereign right to develop its capabilities.

Let us trace the sequence of these significant events:

  • Initiation of the atomic programme in India under the guidance of Homi Jehangir Bhabha

    India's atomic energy program began shortly after independence, driven by the vision of Prime Minister Jawaharlal Nehru and the scientific leadership of Dr. Homi J. Bhabha. The Atomic Energy Commission (AEC) was established in 1948, with Dr. Bhabha as its first chairman. This marked the formal beginning of India's journey into nuclear science and technology, initially focused on peaceful applications like power generation and medicine.

  • Atomic test conducted by China

    China became the fifth nation to possess nuclear weapons when it conducted its first atomic test, codenamed "596," on October 16, 1964. This event significantly altered the geopolitical landscape, particularly in Asia, and added a new dimension to India's security concerns, given the unresolved border disputes between the two countries.

  • Implementation of Nuclear Non-Proliferation Treaty (NPT)

    The Nuclear Non-Proliferation Treaty (NPT) is an international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy, and to further the goal of achieving nuclear disarmament. It was opened for signature in 1968 and entered into force in 1970. India chose not to sign the NPT, viewing it as discriminatory because it allowed existing nuclear powers to retain their weapons while restricting others from developing them.

  • First nuclear explosion conducted by India …

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