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

Concept Questions :-

Di-Hydrogen,type and isotopes
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On bubbling CO2 through a solution of barium peroxide in water:

(a) O2 is formed

(b) H2CO3 is formed

(c) H2O2 is formed

(d) H2 is formed

Concept Questions :-

H2O2 (Hydrogen Peroxide)
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A mixture of hydrazine and 60 to 90 percent of H2O2 solution is:

(a) antiseptic

(b) rocket fuel

(c) germicide

(d) insecticide

Concept Questions :-

H2O2 (Hydrogen Peroxide)
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Temporary hardness is caused due to the presence of:

(a) CaSO4

(b) CaCl2

(c) CaCO3

(d) Ca(HCO3)2

Concept Questions :-

Hard & Soft Water
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H2O2 is prepared in the laboratory when:

(a) MnO2 is added to dilute cold H2SO4

(b) BaO2 is added to CO2 bubbling through cold water

(c) PbO2 is added to an acidified solution of KMnO4

(d) Na2O2 is added to boiling water

Concept Questions :-

H2O2 (Hydrogen Peroxide)
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H2O2 acts as a reducing agent in its:

(a) reaction with a ferrous salt

(b) reaction with iodides

(c) reaction with lead sulphide

(d) reaction with KMnO4 in acidic medium

Concept Questions :-

H2O2 (Hydrogen Peroxide)
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1000 g aqueous solution of CaCO3 contains 10g of calcium carbonate. Hardness of the solution is:

1. 10 ppm

2. 100 pm

3. 1000 ppm

4. 10000 ppm

Concept Questions :-

Hard & Soft Water
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Hydrogen absorbed on palladium is known as:

(a) atomic H

(b) nascent H

(c) occluded H

(d) heavy H

Concept Questions :-

Di-Hydrogen,type and isotopes
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Which of the following acts as both reducing and oxidising agents ?

(a) H2SO4

(b) H2O2

(c) KOH

(d) KMnO4

Concept Questions :-

H2O2 (Hydrogen Peroxide)
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A given solution of H2O2 is 30 volume. Its concentration in terms of molarity is:

(a) 9.1 M

(b) 2.68 M

(c) 2.5 M

(d) 26.8 M

Concept Questions :-

H2O2 (Hydrogen Peroxide)
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Difficulty Level: