What is the molecular formula for Nitric acid ________ ?
A. HNO2
B. HNO3
C. HN2O2
D. H2NO4
Submitted by :- Jamil Ahmed
The discovery of neutron became very late because _______ ?
A. It does not carry any charge
B. It does not move
C. It is a fundamental particle
D. It is present in nucleus
Submitted by :- Jamil Ahmed
The absolute value of charge on electron was determined by ________ ?
What is the molecular weight of Ammonia (NH3) ________ ?
A. 17.31 g/mol
B. 18.31 g/mol
C. 19.31 g/mol
D. 27.33 g/mol
Submitted by :- Jamil Ahmed
Sum of protons and neutrons in an atom gives off _________ ?
A. Nucleon number
B. Mass number
C. Atomic number
D. Both A and B
Submitted by :- Jamil Ahmed
Colour in transition metal compounds is attributed to____________?
A. Small sized metal ions
B. Absorption of light in UV region
C. Complete ns sub-shell
D. Incomplete (n-1) d sub-shell
Submitted by :- Jamil Ahmed
The maximum oxidation shown by Manganese is_________?
A. +2
B. +4
C. +5
D. +7
Submitted by :- Jamil Ahmed
Which of the following is soluble in water?
Which of the following alloys contain(s) Cu and Zn?
A. Bronze
B. Brass
C. Gun-metal
D. Type metal
Submitted by :- Jamil Ahmed
Transition elements, in general, exhibit the following properties, except one. Name that property?
A. Variable oxidation state
B. Natural Radioactivity
C. Tendency to form complexes
D. Formation of alloys
Submitted by :- Jamil Ahmed