How many states of matters are there...? Mcqs

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How many states of matters are there...?

(A) 1
(B) 2

(C) 3
(D) 4

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Why does cytosine not form a bond with adenine...?

(A) Cytosine is unable to form hydrogen bonds with adenine.
(B) Adenine and cytosine have incompatible hydrogen bond donors and acceptors.

(C) Cytosine only pairs with thymine due to their complementary structures.
(D) Adenine is a pyrimidine and cannot bond with cytosine.

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Which of the following are made up of two or more substances that are not chemically combined...?

(A) Compounds
(B) Elements

(C) Solutions
(D) Mixtures

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Refrigerator works on the phenomenon of ________ of heat transfer....?

(A) Conduction
(B) Convection

(C) Radiation
(D) All of these

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What is the addictive drug in tobacco ______________...?

(A) Ethanol
(B) Nicotine

(C) Ammonia
(D) Tar

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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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A state of stress caused by concern for the earth’s environment is called...?

(A) Eco-anxiety
(B) Eco-fear

(C) Eco-depression
(D) Eco-alarm

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Sunlight is a Great Source of ____________...?

(A) vitamin C
(B) vitamin D

(C) vitamin E
(D) vitamin K

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How many eyes does a worm have...?

(A) Two
(B) Three

(C) One
(D) None

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What is the chance of diabetic baby born to parents both heterogeneous normal ...?

(A) Zero
(B) ¼

(C) ½
(D) ¾

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