\ Board Question Paper: July 2023
BOARD QUESTION PAPER : JULY 2023
CHEMISTRY
Time: 3 Hrs. Max. Marks: 70
General Instructions:
The question paper is divided into four sections.
(1) Section A: Q. No. 1 contains Ten multiple choice type of questions carrying One mark each.
Q. No. 2 contains Eight very short answer type of questions carrying One mark each.
(2) Section B: Q. No. 3 to Q. No. 14 are Twelve short answer type of questions carrying Two marks
each. (Attempt any Eight).
ns
(3) Section C: Q. No. 15 to Q. No. 26 are Twelve short answer type of questions carrying Three marks
each. (Attempt any Eight).
(4) Section D: Q. No. 27 to Q. No. 31 are Five long answer type of questions carrying Four marks each.
io
(Attempt any Three).
(5) Use of log table is allowed. Use of calculator is not allowed.
(6) Figures to the right indicate full marks.
at
(7) For each multiple choice type of question, it is mandatory to write the correct answer along with its
alphabet e.g. (a)……./(b)……./(c)……./(d)……etc.
No mark(s) shall be given, if ONLY the correct answer or the alphabet of the correct answer is
written.
lic
Only the first attempt will be considered for evaluation.
Given:
(8) Physical constant:
ub
Avogadro Number = NA = 6.022 1023
SECTION A
P
Q.1. Select and write the correct answer for the following multiple choice type of questions: [10]
(i) Anisole on heating with concentrated HI gives _______.
(a) Iodobenzene (b) Phenol + Methanol
et
(c) Iodobenzene + Methanol (d) Phenol + Iodomethane
(ii) Which solution shows positive deviation from Raoult’s law?
(a) Phenol and Aniline (b) Chloroform and Acetone
rg
(c) Ethanol and Acetone (d) Chloroform and Ethanol
(iii) The coordination number of cobalt in [CoCl2(en)2]+ is
(a) 6 (b) 4
(c) 2 (d) 0
Ta
CHO
(iv)
CO, HCl
Anhydrous AlCl3
High Pressure
The name of above reaction is _______.
(a) Etard reaction (b) Friedel Craft acylation reaction
(c) Stephen reaction (d) Gatterman-Koch reaction
(v) Which is an example of thermoplastic polymer?
(a) Bakelite (b) Polystyrene
(c) Nylon 6, 6 (d) Urea formaldehyde resin
(vi) Nichrome is an alloy of _______.
(a) Cu, Sn (b) Cu, Ni
(c) Ni, Cr (d) Fe, Cr
1
\ Board Question Paper: July 2023
BOARD QUESTION PAPER : JULY 2023
CHEMISTRY
Time: 3 Hrs. Max. Marks: 70
General Instructions:
The question paper is divided into four sections.
(1) Section A: Q. No. 1 contains Ten multiple choice type of questions carrying One mark each.
Q. No. 2 contains Eight very short answer type of questions carrying One mark each.
(2) Section B: Q. No. 3 to Q. No. 14 are Twelve short answer type of questions carrying Two marks
each. (Attempt any Eight).
ns
(3) Section C: Q. No. 15 to Q. No. 26 are Twelve short answer type of questions carrying Three marks
each. (Attempt any Eight).
(4) Section D: Q. No. 27 to Q. No. 31 are Five long answer type of questions carrying Four marks each.
io
(Attempt any Three).
(5) Use of log table is allowed. Use of calculator is not allowed.
(6) Figures to the right indicate full marks.
at
(7) For each multiple choice type of question, it is mandatory to write the correct answer along with its
alphabet e.g. (a)……./(b)……./(c)……./(d)……etc.
No mark(s) shall be given, if ONLY the correct answer or the alphabet of the correct answer is
written.
lic
Only the first attempt will be considered for evaluation.
Given:
(8) Physical constant:
ub
Avogadro Number = NA = 6.022 1023
SECTION A
P
Q.1. Select and write the correct answer for the following multiple choice type of questions: [10]
(i) Anisole on heating with concentrated HI gives _______.
(a) Iodobenzene (b) Phenol + Methanol
et
(c) Iodobenzene + Methanol (d) Phenol + Iodomethane
(ii) Which solution shows positive deviation from Raoult’s law?
(a) Phenol and Aniline (b) Chloroform and Acetone
rg
(c) Ethanol and Acetone (d) Chloroform and Ethanol
(iii) The coordination number of cobalt in [CoCl2(en)2]+ is
(a) 6 (b) 4
(c) 2 (d) 0
Ta
CHO
(iv)
CO, HCl
Anhydrous AlCl3
High Pressure
The name of above reaction is _______.
(a) Etard reaction (b) Friedel Craft acylation reaction
(c) Stephen reaction (d) Gatterman-Koch reaction
(v) Which is an example of thermoplastic polymer?
(a) Bakelite (b) Polystyrene
(c) Nylon 6, 6 (d) Urea formaldehyde resin
(vi) Nichrome is an alloy of _______.
(a) Cu, Sn (b) Cu, Ni
(c) Ni, Cr (d) Fe, Cr
1
