Which is not obtained when metal carbides react with H_2O ? - Vidyadip

MCQ

Which is not obtained when metal carbides react with $H_2O$ ?

✓
$A{l_4}{C_3} + {H_2}O \longrightarrow CH \equiv CH$
B
$CaC_2 + H_2O \longrightarrow CH \equiv CH$
C
$Mg_4C_3 + H_2O \longrightarrow C{H_3}C \equiv CH$
D
$Be_2C + H_2O \longrightarrow CH_4$

✓

Answer

Correct option: A.

$A{l_4}{C_3} + {H_2}O \longrightarrow CH \equiv CH$

a
$\mathrm{Al}_{4} \mathrm{C}_{3}+\mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{CH}_{4}$

Thus alkane is formed instead of acetylene.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The electronic configuration of three elements $A,B$ and $C$ are given below. The molecular formula of the compound formed from $B$ and $C$ will be

$A : 1s^2\, 2s^2\, 2p^6$

$B : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^3$

$C : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^5$

Select set of quantum number which is $NOT$ associated with any electron in $Cr\ (Z = 24)$

It has been found that for a chemical reaction with rise in temperature by $9\, K$ the rate constant gets doubled. Assuming a reaction to be occurring at $300\, K$, the value of activation energy is found to be $......\,k\,J \,mol ^{-1}$. [nearest integer]

(Given $\ln 10=2.3, R =8.3 JK ^{-1} mol ^{-1}, \log 2=0.30$ )

When $Z$ is doubled in an atom, which of the following statements are consistent with Bohr's theory?

Select the suitable reagent for above conversion.

Which shows variable valency

The bond angles of $NH_3, NH_4^+$ and $NH_2^-$ are in the order :-

Which of the following complex ion is not expected to absorb visible light ?

In Carius method for estimation of halogens, $0.2\, \mathrm{~g}$ of an organic compound gave $0.188 \,\mathrm{~g}$ of $\mathrm{AgBr}$. The percentage of bromine in the compound is ...... . (Nearest integer)

[Atomic mass: $\mathrm{Ag}=108, \mathrm{Br}=80$ ]

Coordination number of $Zn$ in $ZnS $ (zinc blende) is