In the process of nitration, the electrophile formed is
In the process of nitration, the electrophile formed is Options (a) NO₂⁺ (b) NO₃⁻ (c) NO₂⁻ (d) NO⁺ Correct Answer:…
7 years ago
KA1995
Copper pyrite, the chief ore of copper, is
Copper pyrite, the chief ore of copper, is Options (a) CuFeS₂ (b) Cu₂S (c) CuCO₃.Cu(OH)₂ (d) Cu₂O Correct Answer: CuFeS₂Explanation:No…
7 years ago
Copper metal crystallizes with a face centred cubic (fcc) lattice .It has
Copper metal crystallizes with a face centred cubic (fcc) lattice .It has a coordination number of Options (a) 4 (b)…
7 years ago
The golden age of Dinosaurs was during which of the following era?
The golden age of Dinosaurs was during which of the following era? Options (a) mesozoic (b) archaeozoic (c) palaeozoic (d)…
7 years ago
Pollen Basket is
Pollen Basket is Options (a) a basket made of pollen (b) a simple basket (c) sac in flowers where pollen…
7 years ago
The fuel wood crisis can be overcome by
The fuel wood crisis can be overcome by Options (a) efficient wood extractions (b) better wood stores (c) using solar…
7 years ago
Bilirubin and biliverdin are
Bilirubin and biliverdin are Options (a) vitamins (b) enzymes (c) bile pigments (d) bile salts Correct Answer: bile pigmentsExplanation:No explanation…
7 years ago
When primary alcohol is oxidised with chlorine, it gives
When primary alcohol is oxidised with chlorine, it gives Options (a) CCl₃CHO (b) Cl₃CHO (c) CH₃COCH₃ (d) CH₃CHO Correct Answer:…
7 years ago
Which of the following compounds is efflorescent?
Which of the following compounds is efflorescent? Options (a) Na₂CO₃ 10H₂O (b) Na₂CO₃ (c) Na₂CO₃ H₂O (d) NaHCO₃ Correct Answer:…
7 years ago
Nitrogen is obtained by the thermal decomposition of
Nitrogen is obtained by the thermal decomposition of Options (a) NH₄NO₃ (b) Pb(NO₃)₂ (c) NH₄NO₂ (d) AgNO₃ Correct Answer: NH₄NO₂Explanation:No…
7 years ago