Which of the following can be beaten into thin sheets?
(a). Zinc
(b). Phosphorus
(c). Sulphur
(d). Oxygen
1 Answers
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Food cans are coated with tin and not with zinc because (a) zinc is costlier than tin.
(c) Food cans are coated with tin and not with zinc because zinc is more reactive than tin.
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In the estimation of sulphur by Carius method, 0.468 g of an organic sulphur compound afforded
Right answer & helpful for us
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In the estimation of sulphur by Carius method, 0.468 g of an organic sulphur compound afforded
1 Answers
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When a carpet is beaten with a stick, dust comes out of it. Explain.
Inertia of an object tends to resist any change in its state of rest or state of motion. When a carpet is beaten with a stick, then the carpet comes...
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Bone matrix is rich in (a) fluoride and calcium (b) calcium and phosphorus (c) calcium and potassium (d) phosphorus and potassium
(b) calcium and phosphorus
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Why is red phosphorus denser and less chemically reactive than white phosphorus ?
[Hint : Because it have polymeric structure consisting chains of P4 tetrahedra, hence denser than white P while red P is not having angular strain as in white P, hence...
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A piece of iron is heated till it becomes red-hot. It then becomes soft and is beaten to a desired shape.
The changes that can be reversed (reversible).
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Buckminsterfullerene is an allotropic form of (A) phosphorus (B) sulphur
The correct answer is (C) carbon
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Which of the following is incorrect? (a) M.p of monoclinic sulphur > m.p. of rhombic sulphur.
(c) Monoclinic sulphur is stable above 369 K
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Assertion : White phosphorus is more reactive than red phosphorus.
(b) White phosphorus exists as P4 tetrahedral molecule having P-P-P bond angle 60º. Hence the molecule is under strain and more reactive. On the other hand red phosphorus exists as...
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