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

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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 [DPMT 1994]

(1) 0.1 N

(2) 0.2 N

(3) 0.3 N

(4) 0.5 N

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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

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10.6 g of Na2CO3 was exactly neutralised by 100 ml of H2SO4 solution. Its normality is

(a) 1 N

(2) 2 N

(3) 1.5 N

(4) 0.5 N

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The molarity of pure water (d = 1 g/l) is [KCET 1993; CMC 1991, CPMT 1974, 88,90]

(1) 555 M

(2) 5.55 M

(3) 55.5 M

(4) None

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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

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The molarity of H2SO4 solution that has a density of 1.84 g/cc at 35°C and contains 98% by weight is [CPMT 1983, 2000; CBSE 1996, 2000; AIIMS 2001]

(1) 4.18 M

(2) 8.14 M

(3) 18.4 M

(4) 18 M

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Concentration Term and Numericals
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Amount of oxalic acid ((COOH)2.2H2O) in grams that is required to obtain 250 ml of a semi-molar solution is 

(1) 17.25 g

(2) 17.00 g

(3) 15.75 g

(4) 15.00 g

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Concentration Term and Numericals
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Volume of 10 M HCl should be diluted with water to prepare 2.00 L of 5 M HCl is 

(1) 2 L

(2) 1.5 L

(3) 1.00 L

(4) 0.5 L

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Concentration Term and Numericals
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The volume of 95% H2SO4 (density = 1.85 g cm–3) needed to prepare 100 cm3 of 15% solution of H2SO4 (density = 1.10 g cm3) will be [CPMT 1983]

(1) 5 cc

(2) 7.5 cc

(3) 9.4 cc

(4) 12.4 cc

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