NEET Questions Solved


The lightest gas is :

(a) nitrogen

(b) helium

(c) oxygen

(d) hydrogen

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#2 | Types of Hydrogen

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Di-Hydrogen,type and isotopes
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Atomic hydrogen is obtained by:

(a) electrolysis of heavy water

(b) reaction of water with heavy metals

(c) thermal decomposition of water

(d) passing silent electric discharge through hydrogen at low pressure

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Para hydrogen is:

(a) less stable than ortho hydrogen

(b) more stable than ortho hydrogen

(c) as stable as ortho hydrogen

(d) none of the above

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What is formed when calcium carbide reacts with heavy water?

(a) C2D2

(b) CaD2

(c) Ca2D2O

(d) CD2

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#2 | Types of Hydrogen

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Under what condition of temperature and pressure the formation of atomic hydrogen from molecular hydrogen will be favoured most?

(a) High temperature and high pressure

(b) Low temperature and low pressure

(c) High temperature and low pressure

(d) Low temperature and high pressure

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The ortho and para hydrogen possess:

(a) same physical properties but different chemical properties

(b) different physical properties but same chemical properties

(c) same chemical and physical properties

(d) different physical and chemical properties

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Hydrogen absorbed on palladium is known as:

(a) atomic H

(b) nascent H

(c) occluded H

(d) heavy H

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Poorest reducing agent among following is

(1) atomic hydrogen

(2) nascent hydrogen

(3) dihydrogen

(4) all have same reducing strength

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Which of the following statements about hydrogen is incorrect?

(a) Hydrogen never acts as cation in Ionic salts

(b) Hydronium ion ,H3O+ exists freely in solution

(c) Dihydrogen does not act as a reducing agent

(d) Hydrogen has three isotopes of which Protium is the most common

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Nascent hydrogen consists of -

(A) Hydrogen atoms with excess energy

(B) Hydrogen molecules with excess energy

(C) Hydrogen ions in the excited state

(D) Solvated protons

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#2 | Types of Hydrogen

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Di-Hydrogen,type and isotopes
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