175 litres of a solution contains `88%` of acid and the rest water. How many liters of water must be added such that the resulting mixture contains `23%` of water ?
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The number of words that can be formed using all the letters of the word REGULATIONS such that `G` must come after `R`, `L` must come after `A`, and `
Correct Answer - A `(a)` The other five letters (other than `G`, `R`, `L`, `A`, `S`, `N`) in `11` places can be arranged in `"^(11)P_(5)` ways. Then three remains six places....
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Find the number of ways of arranging 15 students `A_1,A_2,........A_15` in a row such that (i) `A_2`, must be seated after `A_1 and A_2`, must come af
Correct Answer - A `(a)` First arrange `12` persons `A_(4),A_(5),….A_(15)` in `"^(15)P_(12)` ways There remains `3` places. Keep `A_(1)` in the first place and arrange `A_(2)`, `A_(3)` in the remaining two...
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How much water (in ml) must be added to 300 mL of a 0.2 M solution of `CH_(3)COOH` for the degree of dissociation of the acid to double ? [Assume `K_(
Correct Answer - `0900`
2 Answers 2 views
A solution contains a mixture of two isotopes A (`half-life=10days`) and B (`half-life=5days`). Total activity of the mixture is `10^10` disintegratio
Correct Answer - `[(a) 0.73xx10^(10) dps 0.27xx10^(10) dps, (b) 5.4]`
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10g sample of bleaching powder was dissolved into water to make the solution one litre. To this solution 35 mL of 1.0 M Mohr salt solution was added c
Correct Answer - 0.071
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A mixture containing `As_(2)O_(3)` and `As_(2)O_(5)` required 20 mL of 0.05 N iodine solution for titration. The resulting solution is then acidified
Correct Answer - 0.025075 g
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At constant temperature and pressure, two litres of hydrogen gas react with one litre of oxygen gas to produce two litres of water vapour.
(D) law of gaseous volumes \(\underset{2L}{H_2(g)}+\underset{2L}{O_2(g)}\longrightarrow \underset{2L}{H_2O(g)}\) Gay-Lussac's states that "At same temperature and pressure, when gases combine or produced in a chemical reaction, they do so in a simple ratio by volume. Here, \(H_2\), \(O_2\) and \(H_2O(g)\) are...
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At constant temperature and pressure, two litres of hydrogen gas react with one litre of oxygen gas to produce two litres of water vapour.
2 Answers
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The temperature of mixture of equal quantities of water at 90°C and water at 60°C when added together is ………………….
Correct option is D) 75° C
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Oak tree can transpire as much as …… liters of water per day.
Oak tree can transpire as much as 900 liters of water per day.
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