Friday
October 31, 2014

Posts by chikirshu


Total # Posts: 7

chikirshu
Q.1 0.1 mole of which of the reagents listed below[(1)to(6)]could be added to 1 litre of water to make 0.1M solutions of each of the following ions seprately? (a)NH4^+ (b)CH3COO^- (c)Cl^- (1) NH3 (2)NH4Cl (3) CH3COOH (4)CH3COONa (5)HCl (6)NaCl Q.2 Explain why CH3COOH2^+ is an ...
January 2, 2010

chemistry
If the acid base reaction HA(aq)+B^-(aq)---> HB(aq)+A^-(aq) <--- has a k = 10^-4,which of the following statements are true & why? (a)HB is a stronger acid than HA (b)HA is a stronger acid than HB (c)HA & HB have same acidity (d)B^- is a stronger base than A^- (e)A^- is ...
January 1, 2010

PHYSICS
Q.1.A pendulum clock keeping correct time is taken to high altitudes,its length should be decreased to keep correct time.Why? Q.2.A simple pendulum has a hollow bob filled with a liquid of density d.If the liquid drains out of a small hole in the bottom of the bob,then ...
December 25, 2009

PHYSICS
A closed circular wire hung on a nail in awall undergoes small oscillations 2 degree & the time period 2sec.Find (a) the radius of the circular wire (b)the speed of the particle farthest away from the point of suspension as it goes through the mean position (c) the ...
December 25, 2009

PHYSICS
Q.1.A spring of force constant'k'is cut into two parts whoose lengths are in the ratio 1:2.The parts are now connected in paralle and a block of mass'm'is suspended at the end of the combined spring.Find the period of oscillation performed by the block. Q.2.The...
December 25, 2009

PHYSICS
a 1kg block is executing simple harmonic motion of amplitude 0.1m on a smooth horizontal surface under the restoring force of a spring of spring constant 100N/M.A block of mass 3kg is gently placed on it at the instant it passes through the mean position .Assuming that the two...
December 24, 2009

chemistry
STRUCTURE OF HNO4,(CH3)2SO,(CrO4)2-,NH4NO3,FNO3
December 5, 2009

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