The seawater sample contains 5.8 × 10–3 g of dissolved oxygen per kilogram of the sample. The concentration of oxygen in parts per million is-

1. 5.8 ppm

2. 58.5 ppm

3. 0.58 ppm

4. 0.05 ppm

Subtopic:  Concentration Terms & Henry's Law |
 76%
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A 500 gm toothpaste sample has 0.2 g fluoride concentration. The concentration of fluoride ions in terms of ppm level is

(1) 250 ppm

(2) 200 ppm

(3) 400 ppm

(4) 1000 ppm

Subtopic:  Concentration Terms & Henry's Law |
 78%
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Normality of a solution containing 9.8 g of H2SO4 in 250 cm3 of the solution is

[MP PMT 1995, 2003; CMC Vellore 1991; JIPMER 1991]

(1) 0.8 N

(2) 1 N

(3) 0.08 N

(4) 1.8 N

Subtopic:  Concentration Terms & Henry's Law |
 74%
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Amount of NaOH present in 200 ml of 0.5 N solution is 

(1) 40 g

(2) 4 g

(3) 0.4 g

(4) 4.4 g

Subtopic:  Concentration Terms & Henry's Law |
 79%
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50 ml of 10NH2SO4,25ml of 12 N HCl and 40 ml of 5NHNO3 were mixed together and the volume of the mixture was made 1000 ml by adding water. The normality of the resulting solution will be 

(1) 1 N

(2) 2 N

(3) 3 N

(4) 4 N

Subtopic:  Concentration Terms & Henry's Law |
 79%
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100 ml of 0.3 N HCl is mixed with 200 ml of 0.6 N H2SO4. The final normality of the resulting solution will be

(1) 0.1 N

(2) 0.2 N

(3) 0.3 N

(4) 0.5 N

Subtopic:  Concentration Terms & Henry's Law |
 74%
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An aqueous solution of 6.3 g oxalic acid dihydrate is made up to 250 ml. The volume of 0.1 N NaOH required to completely neutralize 10 ml of this solution is [IIT 2001; CPMT 1986]

(1) 40 ml

(2) 20 ml

(3) 10 ml

(4) 4 ml

Subtopic:  Concentration Terms & Henry's Law |
 55%
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10.6 g of Na2CO3 was exactly neutralised by 100 ml of H2SO4 solution. Its normality is

(1) 1 N

(2) 2 N

(3) 1.5 N

(4) 0.5 N

Subtopic:  Concentration Terms & Henry's Law |
 61%
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The molarity of pure water (d = 1 g/l) is -

1. 555 M

2. 5.55 M

3. 55.5 M

4. None of the above

Subtopic:  Concentration Terms & Henry's Law |
 84%
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Equal volumes of 0.1MAgNO3 and 0.2 M NaCl are mixed. The concentration of NO3 ions in the mixture will be 

(1) 0.1 M

(2) 0.05 M

(3) 0.2 M

(4) 0.15 M

Subtopic:  Concentration Terms & Henry's Law |
 53%
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