Download or Preview 2nd Year Chemistry MCQs With Answers Chapter 4 for both Entry Test and F.Sc Board Exams. Here are Chemistry 12 important mcqs.
IMPORTANCE OF THESE MCQS
It is tough and difficult task to solve 2nd year chemistry mcqs . Students
must have proper preparation of 2nd year chemistry mcqs for excellent
marks in chemistry 12.All the important mcqs related to chapter 4 of 2nd
year Chemistry are here for you. These questions are taken from past
papers of 2nd year chemistry of all Punjab Board of Pakistan as ;
Bahawalpur Board
D.G.Khan Board
Faisalabad Board
Gujranwala Board
Lahore Board
Multan Board
Rawalpindi Board
Content is created and designed with intense care and diligence.
These questions (MCQs) are top repetitive in previous papers. Each
question has a detailed answer explanation. In this way you learn from
your mistakes
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About This Chapter
Chapter no. 4 "Group VA and Group VIA Elements" of 2nd year chemistry
enables the students to learn and write the electronic configuration and
general characteristics of Group VA and Group VIA Elements. Students
learn About properties and preparation of oxides and oxyacids of
nitrogen, phosphorus, and halides of phosphorus. Students learn
structure and properties of oxides of carbon and silicon and their uses.
Students learn properties of oxygen and Sulphur. Students learn
manufacture, properties and uses of sulphuric acid. This "2nd year
chemistry mcqs with answers pdf Chapter 4" covers all important mcqs
that are top repetitive in past papers relevant to above mentioned
topics.
👉For Answers of following questions click the show answer button.
1. Oxidation of NO in air produces
(A) NO2
(B) N2O3
(C) N2O4
(D) N2O5
(C) N2O4
2. Laughing gas is chemically?
(A) N2O
(B) NO2
(C) N2O3
(D) N2O4
(A) N2O
3. Out of all the elements of group VA, the highest ionization energy is
possessed by:
(A) N
(B) P
(C) Sb
(D) As
(A) N
4. The brown gas formed when metal reduces HNO3 to:
(A) NO
(B) NO2
(C) N2O4
(D) N3O4
(B) NO2
5. What is % of calcium phosphate in bone ash?
(A) 60
(B) 70
(C) 80
(D) 90
(C) 80
6. Which catalyst is used in contact process?
(A) Fe2O2
(B) V2O5
(C) SO3
(D) Ag2O
(B) V2O5
7. Which of the following specie has the maximum number of unpaired
electrons?
(A) O2
(B) O2+
(C) O2-
(D) O2-2
(A) O2
8. Which element is most abundant in the earth's crust?
(A) Iron
(B) Oxygen
(C) Carbon
(D) Silicon
(B) Oxygen
9. Property of catenation is best associated with:
(A) Se
(B) S
(C) Oo
(D) Te
(B) S
10. When sugar is treated with conc. H2SO4 the sugar becomes black due to
:
(A) Decolorization
(B) Dehydration
(C) Hydrolysis
(D) Hydration
(B) Dehydration
11. What is the formula of metaphosphoric acid
(A) HPO3
(B) H3PO4
(C) H2PO3
(D) None of these
(A) HPO3
12. Which of the following phosphorus is most stable?
(A) White
(B) Black
(C) Red
(D) Both A & B
(C) Red
13. Gold dissolves Aqua Regia to give
(A) Aurous Nitrate
(B) Auric Chloride
(C) Aurous Chloride
(D) None of these
(B) Auric Chloride
14. The anhydride of nitric acid is:
(A) N2O4
(B) N2O
(C) N2O3
(D) NO
(A) N2O4
15. Which of the following doesn't show allotropy?
(A) Bismuth
(B) Antimony
(C) Arsenic
(D) Phosphorus
(A) Bismuth
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