Which of the following compounds is carbondum?
Al2O3
SiO2
SiC
SnO2
C.
SiC
Carborundum is a commercial name for SiC or Silicon carbide.
Which of the following statements is false ?
CaOCl2 gives OH- Cl- and OCl- in aqueous solution
Diamond and graphite are allotropes of carbon
Bleaching action of Cl2 in moist condition is not permanent
Calomel is Hg2Cl2
Which of the following will show geometrical isomerism?
but-1-ene
but-2-ene
2, 3-dichlorobutane
ethene
What will be the IUPAC name of given compound?
2, 5-diethyl-4-methylhexane
3, 4, 6-trimethyloctane
2, 5, 6-trimethyloctane
3, 5-dimethyl-6-ethylheptane
A mixture of camphor and benzoic acid can be separated by :
chemical method
sublimation
fractional distillation
extraction with a solvent
Hardness of water is due to presence of salts of:
Na+ and K+
Ca2+ and Mg2+
Ca2+ and K+
Ca2+ and Na+
Which one of the following contain isopropyl group?
2, 2, 3, 3-tetramethylpentane
2-methylpentane
2, 2, 3-trimethylpentane
3, 3-dimethylpentane
Cr is member of 3d transition series of atomic number 24. What will be its electronic configuration ?
3d64s2
3d54s2
3d44s2
3d54s1
What amount of Cl2 gas liberated at anode, if 1 ampere current is passed for 30 minute from NaCl solution ?
0.66 mol
0.33 mol
0.66 g
0.33 g