What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20) ?

A. AB3
B. A2B3
C. A2B
D. AB2

Related Mcqs:

A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is_________________?
A. N2O4
B. N2O5
C. N2O3
D. None of these
If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27) used in this reaction is __________ gm?
A. 27
B. 54
C. 5.4
D. 2.7
Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same___________________?
A. Period increases
B. Period decreases
C. Group increases
D. Both ‘B’ & ‘C’
The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the___________________?
A. Trouton’s rule
B. Kopp’s rule
C. Antoine equation
D. Kistyakowsky equation
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?
A. 0.5
B. 1
C. 3
D. 5
The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be _____________ times?
A. 1/2
B. 4
C. √2
D. 1/4
Atomic ______________ of an element is a whole number?
A. Weight
B. Number
C. Volume
D. Radius
In the reaction, Ca + 2H2O = Ca(OH)2 + H2; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water ? (Atomic weight of calcium = 40) ?
A. 4480
B. 2240
C. 1120
D. 0.4
The amount of Zn (atomic weight = 65) required to form 224 c.c. of H2 at N.T.P. on treatment with dilute H2SO4will be _____________ gm?
A. 0.065
B. 0.65
C. 6.5
D. 65
Heat requirement for decomposition of a compound into its elements is _____________ that is evolved during the formation of that compound from its elements?
A. The same
B. Less than
C. Greater than
D. Different than