On the centigrade scale,the temperature of a body increases by $30$ degrees. The increase in temperature on the Fahrenheit scale is ......... $^o$$F$.

$A$ gas is allowed to expand in an insulated container against a constant external pressure of $10 \ atm$ from an initial volume $4.2 \ L$ to $5.2 \ L$. The change in internal energy $\Delta E$ of the gas will be $:-$

$A$ particle performs linear $SHM$. At a particular instant,the velocity of the particle is $u$ and acceleration is $\alpha$ (both having the same direction). At another instant,the velocity is $v$ and acceleration is $\beta$ $(0 < \alpha < \beta)$ (both in opposite directions to each other). The distance between the two positions is

Which of the following halides has the maximum melting point?

Which of the following plants produces seeds but not flowers?

If the roots of the given equation $(\cos p - 1){x^2} + (\cos p)x + \sin p = 0$ are real,then