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# Science MCQ Questions with answers

Here Important Science MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button or on option itself. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping whatsapp button.

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## Learn Science MCQs [Page 1 ]

M

Mr. Dubey • 51.17K Points
Coach

### `Q) Which of the following is not a unit of Energy? `

(A) Calorie
(B) Joule
(C) Electron Volt
(D) Watt
Correct Answer - Option (C)

Explanation:
A) Joule (J). This is the basic energy unit of the metric system, or in a later more comprehensive formulation, the International System of Units (SI). It is ultimately defined in terms of the meter, kilogram, and second. B) Calorie (cal). Historically the calorie was defined in terms of the heating of water. Thus, in a traditional definition, one calorie is the amount of heat required to raise the temperature of 1 gram of water by 1°C, from 14.5 °C to 15.5 °C. (This is sometimes referred to as the 15 °C calorie, and differs slightly from the "calorie" measured for other temperature intervals.) More recently the calorie has been defined in terms of the joule; the equivalence between the calorie and joule is historically known as the mechanical equivalent of heat. C) Kilowatt-hour (kWh). The kilowatt-hour is a standard unit of electricity production and consumption. By definition, noting that 1 kilowatt = 1000 watts:

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M

Mr. Dubey • 51.17K Points
Coach

### `Q) What is the chemical formula of Carbon Monoxide? `

(A) CO2
(B) CO
(C) C2O4
(D) None
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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V

Vaibhav kharat • 0 Points
Newbie

### `Q) Unit of current`

(A) Ampere
(B) Weber
(C) Volt
(D) Voltperm2
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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Y

Yadav_ sachin • 0 Points
Newbie

### `Q) Transmitted by a wave -`

(A) Amplitude
(B) Frequency
(C) Wavelength
(D) Pitch
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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P

Priyanka Tomar • 15.25K Points
Tutor I

### `Q) What is the value of g? `

(A) 10 m/sec²
(B) 9.8 m/sec
(C) 9.8 m/sec²
(D) 10 m/sec
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.17K Points
Coach

### `Q) What is the full form of LASER? `

(A) Light Amplification by Radiation
(B) Light Amplification by Stimulated Emission of Radiation
(C) Light Radiation Amplification
(D) Stimulation Radiation of Light
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.17K Points
Coach

### `Q) Which type of waves are used by a ‘RADAR’ for detecting the presence of an aircraft?`

(A) Sound waves
(B) Electric waves
(D) Ultrasonic waves
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.17K Points
Coach

### `Q) Which of the following is a Lewis acid ?`

(A) AlCl3
(B) BaCl2
(C) CaCl2
(D) AgCl2
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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R

Ranjeet • 14.18K Points
Tutor II

### `Q) Brass gets discoloured in air because of the presence of which of the following gases in air?`

(A) Oxygen
(B) Hydrogen sulphide
(C) Carbon dioxide
(D) Nitrogen
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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R

Ranjeet • 14.18K Points
Tutor II

### `Q) Which of the following is a non metal that remains liquid at room temperature?`

(A) Phosphorus
(B) Bromine
(C) Chlorine
(D) Helium
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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