In Kjeldahl’s mathod, the nitrogen present is estimated as
Options
(a) N₂ (b) NH₃ (c) NO₂ (d) N₂O₃
Correct Answer:
NH₃
Explanation:
No explanation available. Be the first to write the explanation for […]
In Kjeldahl’s mathod, the nitrogen present is estimated as
Options
(a) N₂ (b) NH₃ (c) NO₂ (d) N₂O₃
Correct Answer:
NH₃
Explanation:
No explanation available. Be the first to write the explanation for […]
An organic compound contains 40%C, 6.66% H and rest oxygen .its vapour density is 30.What will be its empirical formula
Options
(a) CHO (b) CH₂O (c) C₂H₂O (d) CH₄O
Correct Answer:
CH₂O
Explanation: […]
Chinese white is
Options
(a) ZnO (b) ZnCO₃ (c) ZnS (d) ZnS + BaSO₄
Correct Answer:
ZnO
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
NO₂ is not obtained on heating
Options
(a) AgNO₃ (b) KNO₃ (c) Cu(NO₃)₂ (d) Pb(NO₃)₂
Correct Answer:
KNO₃
Explanation:
NO₂ is prepared by heating nitrates of heavy metals. 2pb(NO₃)₂ → 2pbO + 4NO₂ […]
Which of the following is used to prepare Cl₂ gas at room temperature from concentrated HCl
Options
(a) MnO₂ (b) H₂S (c) KMnO₄ (d) Cr₂O₃
Correct Answer:
KMnO₄
Explanation:
KMnO₄ oxidised halogen acids to […]
Which of the following is a tribasic acid
Options
(a) hypophosphorous acid (b) phosphorous acid (c) Orthophosphoric acid (d) pyrophosphoric acid
Correct Answer:
Orthophosphoric acid
Explanation:
No explanation available. Be the first to […]
Colloidal solution of gold is prepared by
Options
(a) colloidal mill (b) double decomposition method (c) Bredig’s method (d) Peptization
Correct Answer:
Bredig’s method
Explanation:
No explanation available. Be the first to write […]
Which one of the following is an example of heterogenous catalysis
Options
(a) Oxidation of SO₂ and SO₃ by NO (b) Hydrolysis of ethyl acetate by dilute H₂SO₄ (c) Inversion of cane suger […]
Which of the following ions has the maximum magnetic moment
Options
(a) Mn²⁺ (b) Fe²⁺ (c) Ti²⁺ (d) Cr²⁺
Correct Answer:
Mn²⁺
Explanation:
No explanation available. Be the first to write the explanation […]
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