Question
What is the correct chemical formula for sodium
sulphide?Solution
Sodium sulphide has the chemical formula Na₂S. It is used across various industries including textiles, water treatment, and pulp manufacturing. On exposure to moisture, it can release hydrogen sulphide gas (H₂S).
A sum of money is divided among P, Q, R and S in the ratio of 1:2:6:7 respectively. If the share of R's is Rs. 2860 more than the share of Q, then what ...
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Find the third proportion of √ 2, √ 7 and √ 21.
The ratio of the salaries of Amit, Raj, and Dev is 5:6:7 respectively. Sumit’s salary is 10 rupees less than Amit’s. If the difference between Dev ...
There is a mixture of 63 liters of apple juice and water in a vessel. The ratio of apple juice to water is 3:4. If 14 liters of the mixture is taken out...
If the third proportion of 45 and 60 is “0.5k”, then find the value of (k − 20) : (k + 40).
P, Q and R together started a business. Three times the investment of P equals five times the investment of Q and the capital of Q is twice that of R. F...
What is the fourth proportional to 10¹⁵, 2⁶ and 5⁶?
Two numbers are in the ratio of 6:13. If three is added to both numbers, the ratio becomes 1:2. Find the smaller number.
- If A: B = 4: 5 and B: C = 3: 7, then what is the value of (3A + 8C)/(6B - 2C)?
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