Periscope is another optical instrument that works on the principle of total ____...? Mcqs

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Periscope is another optical instrument that works on the principle of total ____...?

(A) Refraction
(B) Diffraction

(C) External Reflection
(D) Internal Reflection

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Which one of the following waves are used by the common TV remote control...?

(A) Radio waves
(B) Lasers

(C) Infrared waves
(D) Ultrasonic waves

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Which of these are involved in the clotting of blood...?

(A) Platelets
(B) Haemoglobin

(C) Albumin
(D) Globulin

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Molarity of a solution which is prepared by dissolving 40g sodium chloride in 500cm^3 of solution is...?

(A) 1.4M
(B) 1.33M

(C) 1.33M
(D) 1.5M

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Deforestation will decrease...?

(A) Soil erosion
(B) Rainfall

(C) Landslides
(D) Soil fertility

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Which from the following is true for “Sound”...?

(A) Sound cannot travel through a vacuum
(B) Sound cannot travel through gases

(C) Sound cannot travel through liquids
(D) Sound cannot travel through solids

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For every two K⁺ that are actively transported inwards, how many Na⁺ are pumped out of the cell...?

(A) 1
(B) 2

(C) 3
(D) 4

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The springs in brakes and clutches are used ______...?

(A) To restore original position
(B) To measure forces

(C) To absorb shocks
(D) To absorb strain energy

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Which of the following is not a region of the spinal cord ...?

(A) Thoracic
(B) Lumber

(C) Pelvic
(D) All are lying in spinal cord region

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Mammals is defined by which of the following characteristics...?

(A) Born alive
(B) Warm-blooded

(C) Milk feeding
(D) Fur/hair/skin & Spine

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