A sperical balloon of 21 cm diameter is to be filled up with hydrogen at NTP from a cylinder containing the gas at 20 atm and `27^@C`. If the cylinder can hold 2.82 liters of water, calculate the no. of balloons that can be filled up ?

A gas cylinder cotaining gas at 5 atm. Pressure is stored in a romm at 27^@ C . The value of the cylinder can with stand pressure upto 10 atm. The room catches fire. At which temperature wil the value brust ?

A ballon partially filled with hydrogen at normal pressure and temperature is released from the ground . At 20 kilometer up in the atmosphere the temperature is - 40^@C and the pressure is 10 cm of mercury . Calculate the percentage increase in volume of the gas in the balloon.

Fill up the blanks and select the correct option. (i) EcoRl cuts the DNA between bases_______only when the sequence______is present in the DNA duplex. (ii) Disruption of the cell membranes can be achieved by treating the bacterial cells, plant cells and fungal cells with enzymes respectively_______,________and ______. (iii) Since DNA has a_______charge, it moves towards the__________of the electrophoretic chamber. A) (i) G and A, GA A T TC (ii) endonuclease, cellulase, chitinase (ii) negative, anode B) (i) G and A,G A AT TC(i) lysozyme, cellulase, chitinase (iii) positive, cathode C) (i) G and A,GA AT C (ii) lysozyme, cellulase, chitinase (ii)negative, anode D) (i) G and A, GA ATC (ii) lysozyme, cellulase, chitinase (iii) positive, cathode