Question
A 400 ml mixture consists of 30% alcohol. Find how much
alcohol must be added so that alcohol makes up 50% of the new mixture.Solution
ATQ,
Alcohol in the current mixture = 0.30 × 400 = 120 ml
Let added alcohol be ‘x’ ml
So, 120 + x = 0.50 × (400 + x)
Or, 120 + x = 200 + 0.50x
Or, 0.50x = 80
So, x = 80 / 0.50 = 160 ml
- Which of the following is the main function of the large intestine?
The yellow color of human urine is due to which substance?
Small bubbles are perfectly spherical because of –
What is the living substance of a cell that surrounds the cell membrane, nucleus, and cytoplasm called?
In plants, which one of the following gases is released during photosynthesis?
__________results in the formation of zygote.
Which of the statements given below are correct?Â
1. A person having blood group 'A' can donate blood to persons having blood group 'A' and bloo...
In angiosperms, double fertilization involves:
The Bt toxin in Bt crops kills insects by:
Vitamin A is also known as:
Relevant for Exams:
