Question 1

Which Indian missile system is classified as a supersonic cruise missile jointly developed by India and Russia?

Accepted Answer

BrahMos is a supersonic cruise missile jointly developed by India's DRDO and Russia's NPO Mashinostroyeniya. It travels at speeds of approximately Mach 2.8–3.0, making it one of the fastest cruise missiles in the world. It can be launched from land, sea, and air platforms.

Question 2

Which of the following is the chemical formula for the compound commonly known as 'slaked lime', widely used in construction and water treatment?

Accepted Answer

Slaked lime is calcium hydroxide, with the chemical formula Ca(OH)₂. It is produced by adding water to quicklime (CaO) in a process called slaking. It is used in construction as a binding material, in water treatment to adjust pH, and in various industrial processes. The other options represent: CaCO₃ (limestone/chalk), CaO (quicklime), and Ca₃(PO₄)₂ (calcium phosphate).

Question 3

Which part of the human brain is primarily responsible for maintaining balance and coordination of body movements?

Accepted Answer

The cerebellum, located at the back of the brain, is primarily responsible for coordination, balance, and fine motor control. It integrates sensory information to regulate and coordinate voluntary movements. The cerebrum handles higher functions, the medulla oblongata controls autonomic functions, and the hypothalamus regulates homeostasis.

Question 4

Which of the following is the SI unit of electric current?

Accepted Answer

The SI unit of electric current is Ampere (A), named after French physicist André-Marie Ampère. It measures the flow of electric charge through a conductor. Volt is the unit of potential difference, Ohm is the unit of resistance, and Watt is the unit of power.

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