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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Sensory neurons carry message towards ...?

(A) Muscle
(B) Muscles and Glands

(C) Sense and Organs
(D) Brain and Spinal Cord

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The Gas is mobile phase in ______...?

(A) Liquid chromatography
(B) Solid chromatography

(C) Gas chromatography
(D) None of these

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The _________ are a particular group of animals or plants that belong together and have some similar quality....?

(A) Species
(B) Genus

(C) Family
(D) Kingdom

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Solution of biological problem starts with ______...?

(A) Hypothesis
(B) Experimentation

(C) Conclusion
(D) Observation

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We may feel internal injury or altitude sickness at higher or lower altitudes than sea level because...?

(A) Our body adjusts to pressure changes rapidly
(B) Our body adjusts to pressure changes slowly

(C) Our body does not adjust to pressure changes
(D) Our body only adjusts to pressure changes upwards

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Bats can also fly in dark because they are capable of taking the help of _________...?

(A) Ultraviolet Waves
(B) Ultrasonic Waves

(C) Electromagnetic Waves
(D) Special Retina

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The radioactive isotopes are formed by neutrons bombardment on the nucleus, these incident neutrons must have ___ to penetrate in the nucleus....?

(A) Very high velocity
(B) Very low velocity

(C) Intermediate velocity
(D) All of these

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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 among the following is not a secondary consumers...?

(A) Lion
(B) Dog

(C) Wolf
(D) Goat

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