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
Chemistry Mcqs
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
Which of the following phenomenon is considered responsible for Global Warming?
Which of the following phenomenon is considered responsible for Global Warming?
A. Greenhouse effect
B. Fire in coal mines
C. Dry farming
D. Monsoon
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of____________?
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of____________?
A. p-electrons in Ne(Z = 10)
B. s-electrons in Mg(Z = 12)
C. d-electrons in Fe(Z = 26)
D. p-electrons in CI(Z = 17)
Which of the following orbitals has maximum penetration effect?
Which of the following orbitals has maximum penetration effect?
A. S
B. P
C. d
D. f
Which of the following is most soluble on water?
Which of the following is most soluble on water?
A. BaSO4
B. SrSO4
C. CaSO4
D. MgSO4
The common oxidation state of lanthanides is_________?
The common oxidation state of lanthanides is_________?
A. +3
B. +2
C. +1
D. +4
Which one of the following is a bridge element?
Which one of the following is a bridge element?
A. Be
B. Cl
C. K
D. P