The isotopes of elements were discovered by
Options
(a) Thomson (b) Soddy (c) Chadwick (d) Curie
Correct Answer:
Soddy
Explanation:
No explanation available. Be the first to write the explanation for this question […]
In a metal oxide, there is 20% oxygen by weight. its equivalent weight is
Options
(a) 64 (b) 32 (c) 72 (d) 40
Correct Answer:
32
Explanation:
No explanation available. Be the first […]
Empirical formula of a compound is CH₂O.If its molecular weight is 180,then the molecular formula of the compound is
Options
(a) C₃H₆O₃ (b) C₄H₈O₄ (c) C₆H₁₂O₆ (d) C₅H₁₀O₅
Correct Answer:
C₆H₁₂O₆
Explanation:
No […]
Two different gases enclosed in different flasks A and B at same temperature and pressure were found to contain same number of molecules.The radio of volumes of the flasks A and B must be
PV/T= Constant. A real gas will behave as ideal gas
Options
(a) when both pressure and temperature are high (b) both pressure and temperature are low (c) temperature high and pressure is low […]
Deficiency of vitamine B₁ causes the disease
Options
(a) convulsions (b) beri-beri (c) cheilosis (d) sterility
Correct Answer:
beri-beri
Explanation:
Deficiency disease Vitamin
Convulsions B₆
Beri- beri B₁
Cheilosis B₂
Starch is converted into maltose by an enzyme
Options
(a) zymase (b) maltase (c) diastase (d) invertase
Correct Answer:
diastase
Explanation:
No explanation available. Be the first to write the explanation for this […]
Pyridine is less basic than triethylamine because
Options
(a) pyridine has aromatic character (b) nitrogen in pyridine is sp² hybridised (c) pyridine is a cyclic system (d) in pyridine, lone pair of nitrogen […]
Acetamide reacts with NaOBr in the alkaline medium to form
Options
(a) CH₃CN (b) NH₃ (c) CH₃CH₂NH₂ (d) CH₃NH₂
Correct Answer:
CH₃NH₂
Explanation:
No explanation available. Be the first to write the explanation […]
The intermediate formed in aldol condensation is
Options
(a) aldol (b) carbanion (c) alcohol (d) α-hydrogen ester
Correct Answer:
carbanion
Explanation:
No explanation available. Be the first to write the explanation for […]
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