Which of the following can be used to reduce friction between moving parts of machines...? Mcqs

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Which of the following can be used to reduce friction between moving parts of machines...?

(A) Sand
(B) Grease

(C) Gears
(D) Screws

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Which four planets are also called the terrestrial planets...?

(A) Inner planets (Mercury, Venus, Earth, and Mars)
(B) Outer planets (Jupiter, Saturn, Uranus, and Neptune)

(C) Inner planets (Mercury, Venus) and outer planets (Uranus, Neptune)
(D) Inner planets (Earth, Mars) and outer planets (Jupiter, Saturn)

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Vitamin B1 is also known as____________...?

(A) Riboflavin
(B) Retinol

(C) Thiamine
(D) Niacin

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The tendency of the object to remain at rest or, if moving, to continue its uniform motion in a straight line is called...?

(A) Inertia
(B) Momentum

(C) Friction
(D) Gravity

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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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Preservatives are used to preserve _______...?

(A) Acids
(B) Bases

(C) Food
(D) Water

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How many longitudes are there in Globe...?

(A) 90
(B) 180

(C) 270
(D) 360

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Reaction in which solar energy is transferred to glucose from ATP and NADPH2, takes place in stroma called...?

(A) Light reaction
(B) Dark reaction

(C) Light dependent reaction
(D) All of these

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A movable pulley is used as ______...?

(A) Speed multiplier
(B) Force multiplier

(C) Direction changer
(D) Load reducer

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The sun has a __________ year solar cycle during which its activity increases and decreases....?

(A) 10
(B) 11

(C) 12
(D) 13

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