Which of the following aqueous solutions would have the highest boiling point?
A. 0.20 m glucose
B. 0.20 m NaCl
C. 0.15 m CaCl2
D. 0.25 m sucrose
Chemistry Mcqs
The mass of 3.2 moles of ammonia (NH3) gas?
The mass of 3.2 moles of ammonia (NH3) gas?
A. 53.4 grams
B. 54.4 grams
C. 55.4 grams
D. 56.4 grams
How many moles are in 22.2 grams of Calcium chloride, CaCl2?
How many moles are in 22.2 grams of Calcium chloride, CaCl2?
A. 0.2 moles
B. 0.3 moles
C. 0.4 moles
D. 0.5 moles
What is the mass percent of silver in silver notrate, AgNO3?
What is the mass percent of silver in silver notrate, AgNO3?
A. 64.5%
B. 65.6%
C. 63.5%
D. 61.5%
The most commonly used bleaching agent is_________?
The most commonly used bleaching agent is_________?
A. alcohol
B. carbon dioxide
C. chlorine
D. sodium chlorine
The heat required to raise the temperature of body by 1 K is called___________?
The heat required to raise the temperature of body by 1 K is called___________?
A. specific heat
B. thermal capacity
C. water equivalent
D. None of the above
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is___________?
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is___________?
A. 2.05 gram
B. 3.05 gram
C. 4.05 gram
D. 5.05 gram
The octane number of zero is assigned to____________?
The octane number of zero is assigned to____________?
A. 2-methyl octane
B. n-heptane
C. iso-octane
D. 3-methyl octane
The Latin word formica means ant. The name formic acid is derived from this Latin word because__________?
The Latin word formica means ant. The name formic acid is derived from this Latin word because__________?
A. this acid, in ancient times, was used to eliminate ant-hills
B. this corrosive acid is secreted by ants to drive away their enemies
C. this acid was first obtained by the distillation of ants
D. ants are attracted by the odour of this acid
The heat energy produced when the human body metabolises 1 gram of fat is__________?
The heat energy produced when the human body metabolises 1 gram of fat is__________?
A. 30 KJ
B. 1 KJ
C. 39 KJ
D. 29 KJ