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

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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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Who discovered the Polio Vaccine...?

(A) Jonas Salk
(B) Jaber Ibn Hayan

(C) Selman Waksman
(D) None of these

Latest MCQs

The electricity we used in our homes and schools is called...?

(A) Electric Potential (EP)
(B) Electric Resistance (ER)

(C) Direct Current (DC)
(D) Alternating Current (AC)

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In fireworks,the green flame is produced because of __________...?

(A) Sodium
(B) Barium

(C) Mercury
(D) Potassium

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When water is filled in a bottle and is allowed to freeze, the bottle breaks because...?

(A) Water expands on freezing
(B) Bottle contracts at freezing point

(C) temperature outside the bottle is less than that inside the bottle.
(D) None of the above

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Cancer can be treated by ___________...?

(A) Antibiotics & vaccines
(B) Radiotherapy & antibiotics

(C) Chemotherapy & radiotherapy
(D) Antibiotics & Chemotherapy

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Corrosive effect on skin is caused by ______...?

(A) Acid
(B) Base

(C) Salt
(D) Both a & b

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In the periodic table, rows is considered to be a ____...?

(A) Periods
(B) Groups

(C) Zigzag
(D) Diagonal

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Friction can be reduced by changing from _________...?

(A) Rolling to sliding
(B) Sliding to rolling

(C) Dynamic to static
(D) Potential energy to kinetic energy

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The cartilage are made up of cells called...?

(A) Osteoclast
(B) Osteocytis

(C) Chondrocytes
(D) Chaonocytes

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