Questions

All isotopes of the same element have ____________

Select the INCORRECT set of Molecular Formula - IUPAC Name - Common Name from the following options.

Sphalerite is an ore/mineral of

Which of the following is a CORRECT statement?

___ has naked seeds.

Goods for which demand move in the opposite direction of the income of the consumer are called?

A person lent certain sum of money at 5% per annum simple interest and in 15 years the interest amounted to Rs 250 less than the sum lent. What was thesum lent (in Rs)?

A, B and C can complete a work in 20, 24 and 30 days respectively. All three of them starts together but after 4 days A leaves the job and B left the job 6days before the work was completed. C completed the remaining work alone. In how many days was the total work completed?