Percentage of gold in $14$ carat gold is (in $\%$)

What is the value of linear velocity,if $\vec \omega = 3\hat i - 4\hat j + \hat k$ and $\vec r = 5\hat i - 6\hat j + 6\hat k$?

Which of the following is a redox reaction?

If a line in space makes angles $\alpha, \beta,$ and $\gamma$ with the coordinate axes, then the value of $\cos 2\alpha + \cos 2\beta + \cos 2\gamma + \sin^2 \alpha + \sin^2 \beta + \sin^2 \gamma$ is equal to:

The correct formula of diammine dichlorodicyanochromate$(III)$ ion is

What percentage of the population in India is employed in the agricultural sector?