Gypsum is______?
Gypsum is______?
A. CaSO4
B. CaSO4.1/2H2O
C. CaSO4,2H2O
D. CaSO4.3H2O
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Which of the following shows inert pair effect ?
Which of the following shows inert pair effect ?A. boron
B. carbon
C. silicon
D. tinThe pH of 10-3 mol dm-3 of an aqueous solution of H2SO4 is_________________?
The pH of 10-3 mol dm-3 of an aqueous solution of H2SO4 is_________________?A. 3
B. 2.7
C. 2
D. 1.5Hydrogen resembles with carbon because of having________________?
Hydrogen resembles with carbon because of having________________?A. Same number of electrons in the valence shell
B. Similar physical state
C. Remarkable reducing properties
D. Homovalent (show same valency)Methanol can be obtained from_________________?
Methanol can be obtained from_________________?A. water gas
B. destructive distillation of wood
C. methane
D. allAluminium oxide is_________________?
Aluminium oxide is_________________?A. Acidic oxide
B. Basic oxide
C. Amphoteric oxide
D. It does not existsWhen alcohol reacts with phosphorous halides it geive____________________?
When alcohol reacts with phosphorous halides it geive____________________?A. alkyl halides
B. alkyl amine
C. alkanes
D. alkynes