The average salinity of sea water is________?
The average salinity of sea water is________?
A. 3%
B. 3.5%
C. 2.5%
D. 2%
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The Bond Energy of H-F is________?
The Bond Energy of H-F is________?A. 456kJ/mol
B. 562kJ/mol
C. 281kJ/mol
D. NoneIn which compound nitrogen has maximum oxidation state____________________?
In which compound nitrogen has maximum oxidation state____________________?A. N2O
B. NO2
C. HNO2
D. HNO3Pressure remain constant, at which temperature the volume of gas becomes twice of what it is at 0°C?
Pressure remain constant, at which temperature the volume of gas becomes twice of what it is at 0°C?A. 546 °C
B. 546 K
C. 200°C
D. 273 KSize of filter paper is selected according to the amount of__________________?
Size of filter paper is selected according to the amount of__________________?A. solution
B. amount of insoluble solute
C. amount of soluble solute
D. Amount of solventLead accumulators are_______________?
Lead accumulators are_______________?A. secondary cell
B. primary cell
C. voltaic cell
D. both A & COn increasing the temperature the rate of reaction increases mainly because_________________?
On increasing the temperature the rate of reaction increases mainly because_________________?A. The activation energy of the reaction increases
B. Concentration of the reacting molecules increases
C. Collision frequency increases
D. None of these