Bsc I sem : Physics paper 2 : Unit 3 : Time Varying Fields

Class - BSc I sem

Sub. - Physics - Paper 2

Max. Marks - 20        Time - 1:30 Hr.

Q1 State and Explain Faraday's Law and Lenz's law of EM induction (2) Q2 State and Explain Kirchoff's voltage and current Laws.        (3)      Q3. What is Quality Factor?      (2) 

Q4 Explain different Energy losses in transformer?                            (2) 

Q5The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is 0.4 Ω, what is the maximum current that can be drawn from the battery? (3) 

Q6  A battery of EMF 10 V and  internal resistance 3 Ω is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor?                                 (5) 

What is the terminal voltage of the battery when the circuit is closed?

Q7 If R1 = 2Ω, R2 = 5o, R3 = 5Ω, determine the electric current flows in the circuit below.                       (3)

TEST SERIES: CHEMISTRY: Chapter 2 :Solutions

Pathak's Academy Spectrum

 Class - XII 

Sub. - Chemistry 

Max. Marks - 25 Time - 1 Hr. 

Section - A 

Q.No. 1 : Select and write the correct answer [04] 

i) The colligative property of a solution is __________ 

a) Vapour pressure b) Osmotic pressure 

c) Boiling point d) Freezing point 

ii) Concentration of solution having osmotic pressure of 0.082 atm 

at 300 k would be ________ 

a) 0.04 M b) 0.44 M c) 0.033 M d) 1 M 

iii) Phenol on reaction with conc. HNO3 gives _________ 

a) Acetic acid b) Cyclohexanol 

c) Picric acid d) p-nitrophenol 

iv) Resorcinol on distillation with Zn - dust gives _________ 

a) Cyclohexane b) Benzene 

c) Toluene d) Benzenol 

Q. 2 Answer the following. [03] 

i) Write the product 'A' of the reaction ethyl alcohol CrO3 A 

ii) Write IUPAC name of CH3-O-CH-CH3

                                                         | 

                                                         CH3

iii) What is cryoscopic constant? 

Section - B 

Attempt any Four. [4 x 2 = 8 M] 

3) How will you prepare phenol from cumene? 

4) State and explain Raoult's law for the solution containing non 

volatile solute. 

5) What is the action of CH3MgBr on Acetaldehyde? 

6) The boiling point of solution containing 2.62 g of substance 'A' of 

100 g of water is higher by 0.0150C than the boiling point of pure 

water. What is molar moss of substance 'A' [Kb = 5.12 Km-1]