CBSE Class 12 Chemistry Chemical Kinetics Worksheet

 XII - Chemistry Chemical Kinetics CBSE SECTION SECTION - 1 VERY - SHORT - ANSWER QUESTION   1. Define the term rate of reaction.   2. Define the term ‘Rate Constant’.   3. What is meant by half life period for zero order?   4. Write an expression for the half life period…

CBSE Class 12 Chemistry The Solid State Worksheet Set B

Question. Certain crystals produce electric signals on application of pressure. This phenomenon is called: a. Pyroelectricity b. Ferroelectricity c. Peizoelectricity d. Ferrielectricity Answer : C Question. In face centred cubic structure, the octahedral voids are …

CBSE Class 12 Chemistry The Solid State Worksheet Set A

Question. The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. The behaviour is a characteristic of substance forming (a) allotropic crystals (b) liquid…

CBSE Class 12 Chemistry The p Block Elements Worksheet Set C

CBSE Class 12 Chemistry The p Block Elements Worksheet Set C               Very Short Answer Q1)       Which elements are radioactive elements? Q2)       What are halogens? Q3)       When and who discovered chlorine? Q4)       What is noble gas? Q5)       How can we prepare…

CBSE Class 12 Chemistry The p Block Elements Worksheet Set B

Question. When PbO2 reacts with conc. HNO3 the gas evolved is (a) NO2 (b) O2 (c) N2 (d) N2O Answer : B Question. In the reaction HNO3 + HF → H2+NO3 + F base is (a) HF (b) HNO3 (c) HF and HNO3 (d) None of these Answer : B Question. Ammonia is generally manufactured for…

CBSE Class 12 Chemistry The p Block Elements Worksheet Set A

Question. Which of the following will show highest solubility in water? (a) NH3 (b) PH3 (c) AsH3 (d) SbH3 Answer. A Question. Pure nitrogen is obtained from (a) NH3 + NaNO3  (b) N2O + Cu (c) NH4 Cl +NaNO2  (d) (NH4)2 Cr2O7 Answer. D Question. Which of the following…

CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set B

CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set B               Very Short Answer Q1)       Which chemical is used in leather industry? Q2)       Which transition element does not exhibit variable oxidation states? Q3)       How the magnetic moments…

CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set A

Question. Which of the following are d-block elements but not regarded as transition elements? (a) Cu, Ag, Au (b) Zn, Cd, Hg (c) Fe, Co, Ni (d) Ru, Rh, Pd Answer. B Question. The property which is not characteristic of transition metals is (a) variable oxidation states. (b)…

CBSE Class 12 Chemistry Surface Chemistry Worksheet Set C

Question. At the critical micelle concentration, the surfactant molecules: a. Decompose b. Dissociate c. Associate d. Become completely soluble Answer : C Question. Sky looks blue due to: a. Dispersion effect b. Reflection c. Transmission d. Scattering Answer : D Question.…

CBSE Class 12 Chemistry Surface Chemistry Worksheet Set B

Question. Which is/are correct for metal sulphide sols? a. The solution particles are positively charged due to preferential adsorption of metal ions b. The solution particles are negatively charged due to preferential adsorption of sulphide ions c. The cations of…

CBSE Class 12 Chemistry Surface Chemistry Worksheet Set A

Question. Which one of the following characteristics is associated with adsorption? (a) DG and DH are negative but DS is positive. (b) DG and DS are negative but DH is positive. (c) DG is negative but DH and DS are positive. (d) DG, DH and DS all are negative. Answer. D…

CBSE Class 12 Chemistry Solutions Worksheet Set B

Question. 1 mole of benzene (PoBenzene = 42mm) and 2 mole of toluene (Potoluene = 36mm) will have a. Positive deviation from Raults’a law b. Negative deviation from Rault’s law c. Total vapour pressure 38 mm d. Mole fraction of vapours of tolutene above liquid …

CBSE Class 12 Chemistry Solutions Worksheet Set A

Question. An ‘A’molal solution of a compound in benzene has mole fraction of solute = 0.2. The value of A is (a) 1.4 (b) 14.0 (c) 3.2 (d) 2.0 Answer. C Question. What will be the normality of resulting solution in which 5 mL of MHCl, 20 mL of M/2 H2SO4 and 30 mL of M/3 HNO3…

CBSE Class 12 Chemistry Polymers Worksheet Set D

CBSE Class 12 Chemistry Polymers Worksheet Set A               Very Short Answer Q1)       What is homopolymers? Q2)       What is bakelite? Q3)       Define polymerisation? Q4)       What are copolymers? Q5)       What are the uses of bakelite?                            …

CBSE Class 12 Chemistry Haloalkanes and Haloarenes Worksheet Set B

ASSERTION-REASON TYPE OF QUESTIONS The question given below consist of an assertion and a reason use the following key to choose appropriate answer a) Both assertion and reason are correct and reason is the correct explanation of the assertion b) Both assertion and reason are…