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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What is the photosynthesis equation in plants...?

(A) 6CO2 + 6H2O → C6H12O6 + 6O2
(B) 6CO2 + 6H2O → C6H12O6 + 6O3

(C) 6CO2 + 6O2 → C6H12O6 + 6H2O
(D) 6H2O + 6O2 → C6H12O6 + 6CO2

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A pulsar is actually a___________...?

(A) Black hole
(B) White dwarf

(C) Red giant
(D) Neutron star

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Which of the following has the largest wavelength...?

(A) visible light
(B) x-rays

(C) infrared light
(D) ultraviolet radiation

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An object which allows some light to travel through it or allows light to pass through partially is called _____...?

(A) Transparent
(B) Translucent

(C) Opaque
(D) None of these

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Which of the following is secreted by liver and stored in the gallbladder...?

(A) Saliva
(B) Bile

(C) Gastric juice
(D) Pancreatic juice

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Which of these are not found in the food web...?

(A) Air
(B) Sun

(C) Human
(D) None

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Which one of the following decreases along the period...?

(A) Ionization Energy
(B) Atomic Radius

(C) Electronegativity
(D) Electron Affinity

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The correct age of solar system is approximately __________...?

(A) 4.3 Billion years
(B) 4.4 Billion years

(C) 4.5 Billion years
(D) None of these

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The contraction and expansion of the movement of the walls of the food pipe after entering the slightly digested food is known as ______ movement...?

(A) Gastric
(B) Diastolic

(C) Peristaltic
(D) Oscillatory

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