Related Questions

Soda water contains ----.
A carbon dioxcide
B carbonic acid
C nitrous acid
D sulphuric acid
Solution X contains 40% salt and 60% water by weights, Solution Y contains 25% salt and 75% water. If a mixture of X and Y contains 30% salt. What percent of the weight of this mixture is solution X?
A 10%
B 33.3%
C 40%
D 42.5%
A sink contains exactly 12 liters of water. If water is drained from the sink until it holds exactly 6 liters of water less than the quantity of water drained away, how many liters of water were drained away ?
A 2
B 3
C 9
D 6
A milk vendor has 2 cans of milk. The first contains 25% water and the rest milk. The second contains 50% water. How much milk should he mix from each of the containers so as to get 12 litres of milk such that the ratio of water to milk is 3 : 5?
A 4 litres, 8 litres
B 6 litres, 6 litres
C 5 litres, 7 litres
D 7 litres, 5 litres
Soda water was invented by
A Tivadar Puskas
B Joseph Priestley
C Petrache Poenaru
D James Leonard Plimpton
The major disadvantage of lime soda process of water softening is that
A It is unsuitable for turbid and acidic water
B Huge amount of precipitate is formed which creates a disposal problem
C The effluent cannot be reduced to zero hardness
D It is unsuitable for softening the water of excessive hardness
Lime and soda ash are added to water to remove
A Bicarbonates & sulphates of calcium and magnesium
B Undersirable taste and odour
C Bacteria
D Its corrosiveness
__________ is removed from water by lime-soda process.
A Foul smell and taste
B Iron and manganese
C Temporary hardness
D Permanent hardness
A mixture of 20 kg of spirit and water contains 10% water. How much water must be added to this mixture to raise the percentage of water to 25% ?
A 4
B 5
C 8
D 30
A mixture of 20 sprit and water contains 10% water. How much water must be added to this mixture to raise the percentage of water to 25%
A 2
B 4
C 5
D 6

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