Which of the following metals does NOT react with Oxygen even at a high temperature?

Type 1 workers are 2.5 times as efficient as type 2 workers. Twelve Type 1 workers can complete a task in 10 days. How many days would it have taken 4 Type 1 and 15 Type 2 workers to do the same work?

If Rs. 2,000 is invested at the rate of 20% per annum, compounded half-yearly, then the amount after 18 months will be:

Which of the options depicts the correct mirror image of the following figure?

Lateral

From the top of a platform 5 m high, the angle of elevation of a tower was 30 deg. If the tower was 45 m high, how far away from the tower was the platform positioned?

Which of the following is NOT a property of bases?

For dilution of a concentrated acid, we should add:

Which of the following is a correct pair according to increasing atomic number from left to right?