The anhydride of HCIO4 is_________________?
The anhydride of HCIO4 is_________________?
A. Cl2O
B. Cl2O6
C. ClO2
D. Cl2O7
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Downs cell is used to prepare_________________?
Downs cell is used to prepare_________________?A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium metal
D. Sodium hydroxideCharge of electron was measured by__________________?
Charge of electron was measured by__________________?A. J.J Thomson
B. Millikan
C. Rutherford
D. PerrinWhich of the following is mineral fiber ?
Which of the following is mineral fiber ?A. Teflon
B. asbestos
C. saran
D. acrylicAluminium oxide is_________________?
Aluminium oxide is_________________?A. Acidic oxide
B. Basic oxide
C. Amphoteric oxide
D. It does not existsThe easy way of balancing the chemical equation is_________?
The easy way of balancing the chemical equation is_________?A. according to atom’s atomic number.
B. According to atom’s atomic mass.
C. First we balance Metal than non-metal than Hydrogen than Oxygen.
D. None of the aboveWhich of the following have their outer most shell complete in atomic form ?
Which of the following have their outer most shell complete in atomic form ?A. Noble gases
B. Alkali metals
C. Coinage metals
D. Gun metals