The horizontal rows of the periodic table are called ______...? Mcqs

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The horizontal rows of the periodic table are called ______...?

(A) Groups
(B) Periods

(C) Sets
(D) Matrices

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Latest MCQs

Main constituent in air is ___________...?

(A) Oxygen
(B) Nitrogen

(C) Hydrogen
(D) Helium

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The association between two different types of organism which get benefit to each other, cannot live without each other is called...?

(A) Parasitism
(B) Commensalism

(C) Mutualism
(D) Predation

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Which of the following is non-cellular or acellular organism...?

(A) Fungi
(B) Virus

(C) Bacteria
(D) Both A and C

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Heating element of an electric heater is made up of___________...?

(A) Tungsten
(B) Graphite

(C) Chromium
(D) Nichrome

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Following are examples of convex mirrors except ____...?

(A) Rear-view mirror
(B) Dentist mirror

(C) Blind Corner mirror
(D) Security mirror

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Combustion can not take place without __________...?

(A) Hydrogen
(B) Air

(C) Oxygen
(D) Argon

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What do you call the positive electrode of an electric cell...?

(A) Diode
(B) Anode

(C) Grid
(D) Cathode

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The outermost layer of skin is the__________...?

(A) endodermis
(B) dermis

(C) epidermis
(D) hypodermis

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Which bone in human body is not directly attached to other bones...?

(A) Ulna
(B) Hyoid

(C) Tibia
(D) Cranium

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