Which of the following will you use to remove rust stains on cloth...? Mcqs

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Which of the following will you use to remove rust stains on cloth...?

(A) Alcohol
(B) Oxalic Acid Solution

(C) Kerosene Oil
(D) None of These

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If a machine performs 20 J of work in 10 sec. then it power is ______...?

(A) 200 watt
(B) 20 watt

(C) 2 watt
(D) 0.2 watt

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In that the half of the Earth which is facing away from sun, there is...?

(A) Day
(B) Winter

(C) Night
(D) Summer

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Sequence of changes which occurs between one cell division and the next is called...?

(A) Mitosis
(B) Meiosis

(C) Half cycle
(D) Cell cycle

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When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is _________...?

(A) Visible
(B) Transparent

(C) Invisible
(D) opaque

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The lifespan of White Blood Cells is __________ day(s)...?

(A) 1 – 5 days
(B) 3 – 7 days

(C) 4 – 8 days
(D) 5 – 21 days

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Which mineral is the present in milk, cheese, egg, dark green vegetables, small fish and its bones etc etc...?

(A) Sodium
(B) Calcium

(C) Iron
(D) Magnesium

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Metals are good conductors of electricity because they have free _____...?

(A) Electrons
(B) Protons

(C) Neutrons
(D) Photons

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If the container of enclosed gas heated, what will happen inside the container...?

(A) Pressure will be increased
(B) Pressure will be decreased

(C) Pressure will remain constant
(D) Volume will be increased

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The Sun has temperature of around _____...?

(A) 3000 °C
(B) 6000 °C

(C) 4000 °C
(D) 5000 °C

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