Which of the following strongly supports the endosymbiont hypothesis of eukaryotic evolution...? Mcqs

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Which of the following strongly supports the endosymbiont hypothesis of eukaryotic evolution...?

(A) Mitochondria and chloroplasts both have DNA
(B) Mitochondria is free living

(C) Both A and B
(D) None of the above

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The particles of a solid ________...?

(A) Are widely spaced and move freely
(B) Are tightly packed together and stay in a fixed position

(C) Are loosely packed and move randomly
(D) Are sparse and vibrate at long distances

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Which one from among the following is not an example of wedge...?

(A) Axe
(B) Ramp

(C) Knife
(D) Push pin

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A object that does not produce light but it reflects light that comes from luminous object is called...?

(A) Luminous
(B) Non-luminous

(C) Reflective
(D) Illuminated

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What is the name of the central part of the earth...?

(A) Mantle
(B) Core

(C) Crust
(D) None of the above

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By which process does the smell of cooking spread to all the rooms in a house...?

(A) Distillation
(B) Diffusion

(C) Decomposition
(D) Displacement

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A radioactive nuclide emits a β-particle. The atomic number (proton number) of the nucleus number of ______...?

(A) Stays the same
(B) Decreases by 2

(C) Increases by 1
(D) Decreases by 4

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Gravitational force is always ______...?

(A) Repulsive
(B) Attractive

(C) Both
(D) None of these

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Which gas is produced when trees and fossil fuels are burnt...?

(A) Carbon monoxide
(B) Carbon dioxide

(C) Nitrogen oxide
(D) Oxygen

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What is ‘Stealth Technology‘...?

(A) A device which when attached to an aircraft makes it invisible on the radar
(B) A coating which reduces the visibility of an aircraft on radar

(C) A Technology by which it is possible for the aircraft’s to spy in the enemy air-space
(D) A technology by using which paratroopers can be dropped stealthily behind the enemy columns.

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