Which of the following hydrides has the lowest boiling point?

Which one of the following gases is liberated when ethyl alcohol is heated with methyl magnesium iodide?

$\left\{x \in R: \frac{2x-1}{x^3+4x^2+3x} \in R\right\}$ equals

When $20 \ g$ of naphthoic acid $(C_{11}H_8O_2)$ is dissolved in $50 \ g$ of benzene $(K_f = 1.72 \ K \ kg \ mol^{-1})$,a freezing point depression of $2 \ K$ is observed. The Van't Hoff factor $(i)$ is:

Which of the following parts of a neuron is covered by a fatty sheath?

Which hormone is responsible for apical dominance?