Which element has the atomic number 8?

The correct answer is B: Oxygen. Oxygen has atomic number 8. It is essential for respiration in living organisms.

What does SCADA stand for in railway operations?

The correct answer is A: Supervisory Control and Data Acquisition. SCADA (Supervisory Control and Data Acquisition) is a system for monitoring and controlling railway infrastructure remotely.

Under which scheme has Indian Railways launched Wi-Fi services on trains?

The correct answer is B: RailWire WiFi. RailWire provides free Wi-Fi services at railway stations and on selected trains as part of digital connectivity initiatives.

Which of the following elements has the highest electronegativity according to the Pauling scale?

The correct answer is C: Fluorine. Fluorine has the highest electronegativity value (3.98) on the Pauling scale. Electronegativity is the tendency of an atom to attract electrons in a chemical bond. As we go from fluorine down the halogen group, electronegativity decreases.

In which year was Indian Railways established?

The correct answer is B: 1853. Indian Railways was established in 1853 with the first train service between Mumbai and Thane.

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Railway RRB / NTPC

NTPC, Group D, JE — all sections

132 Q 5 Topics Take Mock Test

Difficulty: All Easy Medium Hard 131–132 of 132

Topics in Railway RRB / NTPC

All General Science 100 Mathematics 18 Current Affairs (Railway) 100 Indian Railway GK 100 Technical Knowledge (NTPC) 100

Q.131 Easy General Science

What is the SI unit of electric current?

A Volt

B Ampere

C Ohm

D Watt

Correct Answer: B. Ampere

EXPLANATION

Ampere (A) is the SI unit of electric current. Volt is for potential difference, Ohm for resistance, and Watt for power.

Test

Q.132 Easy General Science

Which of the following is NOT a renewable energy source?

A Solar energy

B Wind energy

C Coal

D Hydroelectric energy

Correct Answer: C. Coal

EXPLANATION

Coal is a fossil fuel and non-renewable energy source. Solar, wind, and hydroelectric are all renewable sources.

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