CBSE Class 12 Chemistry Question Paper 2017: Delhi
Class 12 Chemistry question paper of CBSE Class 12th board exam 2017 is available here for download in PDF format. CBSE Class 12 Chemistry board exam was held on 25 March 2017. Most of the students appeared for CBSE Class 12 Chemistry board exam 2017 pointed out that the paper was quite easy.
General guidelines for solving CBSE Class 12 Chemistry Question Paper
All questions are compulsory .
Question number 1 to 5 are very short-answer questions and carry 1 mark each.
Question number 6 to 10 are short-answer questions and carry 2 mark each.
Question number 11to 22 are also short-answer questions and carry 3 mark each.
Question number 23 is a value based question can carry 4 marks.
Question number 24 to 26 are long-answer type questions and carry 5 marks each.
Use log tables, if necessary. Use of calculators is not allowed
Some randomly selected questions from CBSE Class 12 Chemistry 2017 Board Paper
Q. Write the formula of an oxo-anion of Manganese (Mn) in which it shows the oxidation state equal to its group number.
Q. Write IUPAC name of the following compound:
Q. Write the structure of 1-Bromo-4-chlorobut-2-ene.
Q. Write one similarity between Physisorption and Chemisorption.
Q. Complete the following reactions:
(i) NH3 + 3Cl2(excess)→
(ii) XeF6 + 2H2O→
Q. What happens when
(i) (NH4)2Cr2O7 is heated?
(ii) H3PO3 is heated?
Write the equations.
Q. Define the following terms:
(i) Colligative properties
(ii) Molality (m)
Q. Draw the structures of the following:
Q. Write the equations involved in the following reactions:
(i) Wolff-Kishner reduction
(ii) Etard reaction
Q. A 10% solution (by mass) of sucrose in water has freezing point of 269.15 K. Calculate the freezing point of 10% glucose in water, if freezing point of pure water is 273.15 K.
(Molar mass of sucrose = 342 g mol─1)
(Molar mass of glucose = 180 g mol─1)
Q. (a) Calculate the mass of Ag deposited at cathode when a current of 2 amperes was passed through a solution of AgNO3 for 15 minutes. (Given: Molar mass of Ag = 108 g mol─1 1F = 96500 C mol─1)
(b) Define fuel cell.
Q. Write one difference in each of the following:
(i) Lyophobic sol and Lyophilic sol
(ii) Solution and Colloid
(iii) Homogeneous catalysis and Heterogeneous catalysis
Q. Following compounds are given to you:
2-Bromopentane, 2-Bromo-2-methylbutane, 1-Bromopentane
(i) Write the compound which is most reactive towards SN2 reaction.
(ii) Write the compound which is optically active.
(iii) Write the compound which is most reactive towards β-elimination reaction.