Nitrobenzene, on nitration,produces
Nitrobenzene, on nitration,produces Options (a) trinitrobenzene (b) m-dinitrobenzene (c) p-dinitrobenzene (d) all of these Correct Answer: m-dinitrobenzeneExplanation:No explanation available. Be…
7 years ago
PB2002
Which of the following glass is used in making wind screen of automobiles
Which of the following glass is used in making wind screen of automobiles Options (a) Jena (b) Pyrex (c) Safety…
7 years ago
Plaster of paris is used
Plaster of paris is used Options (a) in surgery and dentistry (b) as a white wash (c) as a constituent…
7 years ago
Magnesium does not decompose in
Magnesium does not decompose in Options (a) steam (b) hot water (c) cold water (d) semi-hot water Correct Answer: cold…
7 years ago
Which of the following polymer is an example of fibre
Which of the following polymer is an example of fibre Options (a) Silk (b) Dacron (c) Nylon-66 (d) All of…
7 years ago
At 400K sodium phenoxide reacts with CO₂ to produce
At 400K sodium phenoxide reacts with CO₂ to produce Options (a) catechol (b) sodium salicylate (c) benzoic acid (d) salicylaldehyde…
7 years ago
Which of the following is a coordination compound
Which of the following is a coordination compound Options (a) Potash alum (b) Potassium ferrocyanide (c) Mohr's salt (d) Microcosmic…
7 years ago
The hardness of transition elements is due to their
The hardness of transition elements is due to their Options (a) large atomic size (b) metallic bonding (c) covalent bonding…
7 years ago
The earth was formed about how many years ago?
The earth was formed about how many years ago? Options (a) 4.6 billion (b) 10 billion (c) 15 billion (d)…
7 years ago
The presence of gill slits, in the embryos of all vertebrates, supports the theory of
The presence of gill slits, in the embryos of all vertebrates, supports the theory of Options (a) biogenesis (b) recapitulation…
7 years ago