The major product of the following reaction is

Among the following,which is water insoluble?

$50 \ \Omega$ and $100 \ \Omega$ resistors are connected in series. This connection is connected with a battery of $2.4 \ V$. When a voltmeter of $100 \ \Omega$ resistance is connected across the $100 \ \Omega$ resistor,the reading of the voltmeter will be $.......... \ V$.

The point of intersection of the lines $l_1: r(t)=(i-6j+2k)+t(i+2j+k)$ and $l_2: R(u)=(4j+k)+u(2i+j+2k)$ is

$A$ beam of light of wavelength $600\, nm$ from a distant source falls on a single slit $1\, mm$ wide and the resulting diffraction pattern is observed on a screen $2\, m$ away. The distance between the first dark fringes on either side of the central bright fringe is

If $(p \wedge \sim q) \wedge (p \wedge r) \to \sim p \vee q$ is false,then the truth values of $p, q$ and $r$ are respectively