The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ...? Mcqs

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The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ...?

(A) red waves
(B) Infrared waves

(C) Ultrasonic
(D) super sonic

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Oxidation is a chemical reaction involving the __________...?

(A) Gain of Electrons
(B) Loss of Electrons

(C) Gain of Protons
(D) Loss of Protons

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The separation between two consecutive compressions of the sound wave is called...?

(A) Time period
(B) Frequency

(C) Amplitude
(D) Wavelength

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What is the largest artificial object in space...?

(A) ISS (International Space Station)
(B) AI powered robot

(C) Parabolic aircraft
(D) None of the above

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Which of the following is a diverse group of hydrophobic molecules...?

(A) Carbohydrates
(B) Lipids

(C) Proteins
(D) Nucleic acids

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How many types of motion ...?

(A) 2
(B) 3

(C) 4
(D) 5

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What prevents the earth’s atmosphere from drifting away into space...?

(A) Gravity
(B) Ozone layer

(C) Troposphere
(D) Ecosystem

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Atmosphere is held in place by...?

(A) Pressure of the planetary body
(B) Gravity of the planetary body

(C) Charge of the planetary body
(D) Heat of the planetary body

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Vector quantities have _____ along with magnitude and unit....?

(A) Magnitude
(B) Direction

(C) Both a and b
(D) None of them

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Which one of the following animal is a decomposer...?

(A) Mould
(B) Wolf

(C) Bird
(D) Cat

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