Which mineral is makes red blood cells and it involved in oxygen transport and storage for energy conversions...? Mcqs

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Which mineral is makes red blood cells and it involved in oxygen transport and storage for energy conversions...?

(A) Magnesium
(B) Sodium

(C) Copper
(D) Iron

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Ten identical steel balls, each with a mass of 27 g, are immersed in a measuring cylinder initially containing a certain volume of water. The water level rises by 50 cm³ after immersing the balls. What is the density of the steel...?

(A) 0.90 gm/cm^3
(B) 8.1 gm/cm^3

(C) 9.0 gm/cm^3
(D) 13.5 gm/cm^3

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Long-sight defect could be corrected by using __________ lens...?

(A) concave
(B) Convex

(C) diverging
(D) none of these

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The major part of natural gas, petroleum and coal consists of...?

(A) Carbon
(B) Chlorine

(C) CFC
(D) Methane

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Which one of the following is not a fraction of crude oil...?

(A) Petroleum coke
(B) Ammonia

(C) Fuel oil
(D) Paraffin wax

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The presence of a dielectric between the plates of capacitors, the capacitance of capacitor ______...?

(A) Increases
(B) Remain constant

(C) Decreases
(D) Remain uncharged

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If a gas is heated in a sealed cylinder, then _______ increases....?

(A) Pressure inside the container
(B) Average kinetic energy of the particles

(C) Temperature of the gas
(D) All of them

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Scientific reasoning based on “if-then” statement called...?

(A) Inductive reasoning
(B) Deductive reasoning

(C) Scientific reasoning
(D) None

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Wisdom teeth normally grow between the age of___________...?

(A) 34-40
(B) 17-30

(C) 45-55
(D) 10-17

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When the moon and the sun are on opposite side of the earth, we see a _____...?

(A) New Moon
(B) Full Moon

(C) Half Moon
(D) None

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