Atoms or ions missing from the normal lattice point creating a vacancy is due to
Options
(a) Frenkel defect (b) Schottky defect (c) Mass defect (d) Interstitial defect
Correct Answer:
Schottky defect
Explanation: […]
Schottky defect defines imperfection in the lattice structure of a
Options
(a) solid (b) gas (c) liquid (d) plasma
Correct Answer:
solid
Explanation:
Schottky defect: If some of the lattice points are unoccupied, […]
Aromatic hydrocarbon shows mostly
Options
(a) substitution electrophilic reactions (b) addition electrophilic reactions (c) substitution nucleophilic reactions (d) addition nucleophilic reactions
Correct Answer:
substitution electrophilic reaction
Explanation:
No explanation available. Be the first […]
Petroleum is a mixture of
Options
(a) alkynes (b) alkanes (c) alkyl halides (d) alkenes
Correct Answer:
alkanes
Explanation:
Petroleum is a mixture of alkanes. Various products obtained from fractional distillation of petroleum are […]
In an organic compound phosphorus is estimated as
Options
(a) Mg₂P₂O₇ (b) Mg₃(PO₄)₂ (c) H₃PO₄ (d) P₂O₅
Correct Answer:
Mg₂P₂O₇
Explanation:
A pre-weighed amount of organic compound is heated with concentrated nitric acid […]
Number of isomers of C₄H₁₀ is
Options
(a) 4 (b) isomerism not exist (c) 3 (d) 2
Correct Answer:
2
Explanation:
No explanation available. Be the first to write the explanation for this […]
Potassium is stored in
Options
(a) alcohol (b) water (c) kerosene (d) liquid ammonia
Correct Answer:
kerosene
Explanation:
On exposure to moist air , K tarnish quickly . Therefore K is always kept under […]
Formula of Plaster of Paris is
Options
(a) CaSO₂.(1/2)H₂O (b) CaSO₄.H₂O (c) CaSO₄.(1/3)H₂O (d) CaSO₄.2H₂O
Correct Answer:
CaSO₂.(1/2)H₂O
Explanation:
Plaster of Paris is CaSO₄. 1/2 H₂O. It is formed by heating the gypsum. CaSO₄. […]
For decolourization of 1 mole of KMnO₄, the moles of H₂O₂ required is
Options
(a) 1/2 (b) 3/2 (c) 5/2 (d) 7/2
Correct Answer:
5/2
Explanation:
No explanation available. Be the first to […]
The oxidation number of oxygen in O₂PtF₆ is
Options
(a) zero (b) 1/2 (c) 1 (d) -1/2
Correct Answer:
1/2
Explanation:
No explanation available. Be the first to write the explanation for this […]
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