Question
Which vitamin deficiency is most directly associated
with night blindness in humans?Solution
Night blindness, or difficulty seeing in low light conditions, is most directly associated with a deficiency of vitamin A. Vitamin A is essential for the formation of visual pigments in the retina, particularly rhodopsin, which is found in rod cells that function in dim light. Foods rich in vitamin A are such as liver, eggs, milk, and beta-carotene–rich vegetables like carrots and spinach, help prevent this condition.
Quantity of milk is 20% more than that of water in 220 litres mixture (milk + water). On adding (n - 6) litres water and (n + 6) litres milk in mixture,...
200 litres of mixture ‘A’ consists of 120 litres milk and the rest water. Find the total quantity of mixture ‘B’ if it has 30% more milk and 10%...
A certain mixture consists of oil and water, with the water content exceeding that of oil by 20%. When 70 ml of oil and 60 ml of water are introduced in...
26.75 litres of a mixture P (milk and water) is combined with another mixture Q. The resulting mixture has milk to water in the ratio 4:7. If mixture Q ...
A milkman mixed equal quantities of two mixtures, ‘A’ and ‘B’. In mixture ‘A’, the milk-to-water ratio is 5:2, while in mixture ‘B’, it ...
A jar contains a mixture of milk and water in the ratio 4:3, respectively. If 4-litres of the mixture is taken out, then the quantity of water left in t...
Two alloys named 'X' and 'Y' contain gold and silver in the ratio of 3:2 and 7:5 respectively. If 100 grams of X and 120 grams of Y are mixed together, ...
480 litres of a mixture contain milk and honey, only, in the ratio of 5:m, respectively. If 20 litres honey is added into it, then theratio of quantity ...
136 litres of mixture ‘A’ (milk + water) contains 32 litres more water than milk. If 25% of mixture ‘A’, 70 litres of milk and 80 litres of wate...
640 litres of mixture ‘A’ contains milk and water in it. If mixture ‘A’ is mixed with 560 litres of mixture ‘B’ which contains water and sal...
Relevant for Exams:
