What are the reactants in the reaction: CH4 + 2O2 → CO2 + 2H2O...? Mcqs

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What are the reactants in the reaction: CH4 + 2O2 → CO2 + 2H2O...?

(A) Methane and Oxygen
(B) Carbon dioxide and Water

(C) Hydrogen and Oxygen
(D) Carbon and Water

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The atmospheric air is held to the Earth by...?

(A) gravity
(B) winds

(C) clouds
(D) rotation of the Earth

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Chromosomes in the cell which are similar to each other in shape and size are called...?

(A) Homologous pair
(B) Heterologous pair

(C) Sister chromatids
(D) Non-homologous pair

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The northern and the southern hemispheres are separated by ______...?

(A) The International date line
(B) The plane of the Equator

(C) The place of Tropic of cancer
(D) The place of Tropic Capricom

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Which of the following is not the organic bases of DNA...?

(A) Adenine
(B) Cytosine

(C) Thymine
(D) Uracil

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The rocks formed out of layers of sediment bonded together are known as _______________...?

(A) Metamorphic rocks
(B) Sedimentary rocks

(C) Igneous rocks
(D) All of the above

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Which one of the following statements is false about dynamic equilibrium...?

(A) It takes place in a close container
(B) Concentration of reactant and products are not changed

(C) Rate of forward reaction is equal to rate of reverse reaction
(D) Equilibrium cannot be disturbed by any external stress

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Which is the hardest substance in the human body...?

(A) Tooth enamel
(B) Skull

(C) Knee cap
(D) Rib

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Which part of a bicycle dynamo spins to generate electricity...?

(A) Magnet
(B) Gear

(C) Axle
(D) Coils

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What is the weight of the average human brain...?

(A) 1.2 to 1.4 Kg
(B) 1.4 to 1.8 Kg

(C) 2.1 to 2.8 Kg
(D) 3.1 to 3.4 Kg

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