MCQ
Red phosphorus is less reactive than yellow phosphorus because
- AIts colour is red
- ✓It is highly polymerised
- CIt is hard
- DIt is insoluble in ${C_2}{H_5}OH$
✓
Answer
Correct option: B.
It is highly polymerised
b
(b) Because yellow phosphorus is most reactive form of phosphorus and is highly polymerised.
(b) Because yellow phosphorus is most reactive form of phosphorus and is highly polymerised.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The vapour pressure of benzene at a certain temperature is $640\,mm$ of $Hg$. A non-volatile and non-electrolyte solid weighing $2.175\,g$ is added to $39.08\,g$ of benzene. The vapour pressure of the solution is $600\,\,mm$ of $Hg$. What is the molecular weight of solid substance
→Purification of alumina takes place by $........$
→Major product
The chemical equivalent of copper and zinc are $32$ and $108$ respectively. When copper and silver voltameter are connected in series and electric current is passed through for sometimes, $1.6\, g$ of copper is deposited. Then, the mass of silver deposited will be .......... $\mathrm{g}$
→Which of the following has an optical isomer
$Na_2S + Na_2[Fe(CN)_5NO] \to Na_4[Fe(CN)_5NOS]$ ; oxidation number of $Fe$ in reactant (complex) and product (complex) are
→In a conductometric titration, small volume of titrant of higher concentration is added stepwise to a larger volume of titrate of much lower concentration, and the conductance is measured after each addition.
→The limiting ionic conductivity ( $\Lambda 0$ ) values (in $mS m ^2 mol ^{-1}$ ) for different ions in aqueous solutions are given below:
| Ions | $Ag ^{+}$ | $K ^{+}$ | $Na ^{+}$ | $H ^{+}$ | $NO _3^{-}$ | $CI ^{-}$ | $SO _4^{2-}$ | $OH ^{-}$ | $CH_3COO ^{-}$ |
| $\Lambda_0$ | $6.2$ | $7.4$ | $5.0$ | $35.0$ | $7.2$ | $7.6$ | $16.0$ | $19.9$ | $4.1$ |
For different combinations of titrates and titrants given in $List-l$, the graphs of 'conductance' versus 'volume of titrant' are given in $List-II$.
Match each entry in $List-I$ with the appropriate entry in $List-II$ and choose the correct option.
One Faraday of electricity liberates $\mathrm{x} \times 10^{-1}$ gram atom of copper from copper sulphate, $\mathrm{x}$ is____.
→Which of the following is not characteristic of alcohols:
The major product $B$ formed in the following reaction sequence is
→$[Figure]$ $\xrightarrow[{(ii){H_2}O}]{{(i)\,{C_2}{H_5}MgBr}}A\xrightarrow{{HCl}}B$