About Super 20 Sample Paper Chemistry Class 12
Super 20 Chemistry Sample Paper for class 12 is designed in accordance with the pattern specified by the CBSE for the Examination. This book consists of 20 Solved Different types of questions. These papers give you an idea about how your real Board Examination Question Paper will look in terms of difficulty level, marks distribution, sections, number & type of questions, time and duration.
Why to Practice Super 20 Chemistry Sample Paper?
Super 20 Chemistry Sample Papers help you to get into the real exam-type feeling. As this question paper is exactly similar to the CBSE sample papers, you will find it very useful to analyze how much time you need to answer each question, what should be your writing strategy and how to finish it in given time. The more you practice, the more efficiency level you achieve. It matters a lot. Most of the time, you know the answers but you miss it only because of bad time management.
Students are advised to solve all these Sample Papers and refer their answers to the Marking Scheme to assess their level of preparation for CBSE Board Examination. All these questions are very important for forthcoming CBSE Board Examination.
Some Questions from Super 20 Sample Paper Chemistry Class 12
Which class of drugs is used in sleeping pills?
(a) How will you classify brass and steel?
(b) What are the factors that affect the solubility of a gas in a liquid?
How much Faraday’s of electricity is required for electrolysis of following?
(a) 1 mol Al2O3 to Al (b) 1 mol Cr2Cu2 to Cu
(a) Write two differences between order and molecularity of reaction.
(b) Define specific rate constant.
0.6 mL of acetic acid (CH3COOH) having density 1.06 g/mL is dissolved in 1 litre of water. The depression in freezing point observed for this is 0.0205°C. Calculate van’t Hoff factor and the dissociation constant for the acid.
An aqueous solution containing 12.48 g of BaCl2 in 1.0 kg of water boils at 373.0832 K. Calculate the degree of dissociation of BaCl2 (Given, Kb for the water = 0.52 K kg mol–1, molar mass of BaCl2 = 208.34 g/mol).
The density of copper metal is 8.95 g/cm3 and radius of its atom is 127.8 pm. Which type of unit cell occur in copper metal according to the above information?
How will you convert the following:
(a) 2-Chloropropane to 1-Bromopropane
(b) Benzene to biphenyl
(c) Chloropentane to fluoropentane
(a) What will be the observed change when concentration of soap increases in its aqueous solution?
(b) Define zeta potential.
(c) What leads to hardening of lather on tanning?
Arrange the following in increasing order of property indicated for each set:
(a) H2O, H2S, H2Te, H2Se (acidic strength)
(b) NH3, SbH3, BiH3, AsH3 (basic strength)
(c) F2, Cl2, Br2, I2 (Bond dissociation enthalpy)
(a) Name the deficiency diseases caused due to lack of vitamin A and E in the diet.
(b) Name the component of starch which is water soluble.