mcq
Give me answer of this question. The normality of 10% (weight/volume) acetic acid is: (a)1 N (b)10 N (c)1.7 N (d) 0.83 N
Can someone please help me in getting through this problem. How many grams of dibasic acid (having mol. wt. 200) must be present in 100ml of its aqueous solution to provide decinormal strength: (i) 1g (ii)2g (iii) 10g (iv) 20g<
Can someone help me in going through this problem. The statement “When 0.003 moles of a gas are dissolved in 900 gm of water under a pressure of 1 atm, 0.006 moles will be dissolved under the pressure of 2 atm", signfies:
(a)
Choose the right answer from following. The molarity of a solution of Na_{2}CO_{3} having 10.6g/500ml of solution is : (a) 0.2M (b)2M (c)20M (d) 0.02M
A 500 gm tooth paste sample has 0.2g fluoride concentration. Determine the concentration of F in terms of ppm level: (a) 250 (b) 200 (c) 400 (d) 1000Answer: (c) F^{-}ions in ppm = (0.2/500) x 10^{6} = 400
The Liver Is Responsible For Much Of The Pentose Phosphate Activity Explain
20 g of hydrogen is present in 5 litre of vessel. Determine he molar concentration of hydrogen: (a) 4 (b) 1 (c) 3 (d) 2
Choose the right answer from above.
The boiling point of benzene is 353.23 K. If 1.80 gm of a non-volatile solute was dissolved in 90 gm of benzene, the boiling point is increased to 354.11 K. Then the molar mass of the solute is:
(a) 5.8g mol^{-1} (b)
The boiling point of 0.1 molal aqueous solution of urea is 100.18^{o}C at 1 atm. The molal elevation constant of water is: (a) 1.8 (b) 0.18 (c) 18 (d) 18.6Answer: (a) K_{b}
Can someone help me in finding out the right answer. 25ml of 3.0 MHNO_{3} are mixed with 75ml of 4.0 MHNO_{3}. If the volumes are adding up the molarnity of the final mixture would be: (a) 3.25M (b) 4.0M (c) 3.75M (d) 3.50M
how avogadros hypothesis used to deduce the atomicity of elementry gases ?
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