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A&R quiz chemistry(Day-5)

Update on: 18 Mar 2019, 11:09 AM

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ASSERTION : The Duma’s method is more applicable to nitrogen containing organic compounds than the Kjeldahl’s method. REASON : The Kjeldahl’s method does not give satisfactory results for compounds in which nitrogen is directly linked to oxygen.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : Sodium ions are discharged in preference to hydrogen ions at a mercury cathode. REASON : The nature of cathode can affect the order of discharge of cations.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : Be does not impart any characteristic colour to the bunsen flame. REASON : Due to its very high ionization energy, beryllium requires a large amount of energy for excitation of the electrons.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : The O – O bond length in H2O2 is shorter than that of O2F2. REASON : H2O2 is an ionic compound.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : Both, oxygen atom in O2 or O3 has an oxidation number of –2. REASON : Oxygen is assigned an oxidation number –2 in almost all their compounds.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : Strength of oxyacids follow order : HIO4 < HBrO4 < HClO4. REASON : Acidic strength of oxyacids of same type formed by different elements depends on oxidation number.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : Amongst the halogens, fluorine can oxidise the elements to the highest oxidation state. REASON : Due to small size of fluoride ion, it is difficult to oxidise fluoride ion to fluorine. Hence, reverse reaction takes place more easily.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : Benzene on heating with conc. H2SO4 gives benzenesulphonic acid which when heated with superheated steam under pressure gives benzene. REASON : Sulphonation is a reversible process.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : The number of tetrahedral voids is double the number of octahedral voids. REASON : The size of the tetrahedral voids is half of that of the octahedral void.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

ASSERTION : In a pressure cooker, the water is brought to boil. The cooker is then removed from the stove. Now, on removing the lid of pressure cooker, the water starts boiling again. REASON : The impurities in water bring down its boiling point.

a) Both ASSERTION and REASON Are True and REASON Is the Correct Explanation of ASSERTION

b) Both ASSERTION and REASON Are True but REASON Is Not the Correct Explanation of ASSERTION

c) ASSERTION Is True but REASON Is False

d) Both ASSERTION and REASON are False.

Correct! Wrong!

A&R quiz chemistry(Day-5)

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