MCQ
Which one of the following is more acidic
  • A
    Butane
  • B
    $1-$butene
  • C
    $2-$butyne
  •  $1-$butyne

Answer

Correct option: D.
 $1-$butyne
d
Most acidic compound is $1$- butyne since hydrogen is attached to $sp$ hybridised carbon. While $2$-butyne has no hydrogen attached to $sp$ hybridised carbon.

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

Similar questions

The formula weight of ${H_2}S{O_4}$ is $ 98$. The weight of the acid in $400\,ml$ of $0.1\,M$ solution is  ........... $g$
Electrode potentials of five elements $A,\,B,\,C,\,D$ and $E$ are respectively $-1.36 , -0.32, 0, -1.26$  and $ -0.42$. The reactivity order of these elements are in the order of
An aqueous solution ox $X$ is added slowly to an aqueous solution of $Y$ as shown in list $I$. The variation in conductivity of these reactions is given in List $II$. Match List $I$ with List $II$ and select the correct answer using the code given below the lists :

List $I$ List $II$
$P$. $\quad \underset{X}{\left( C _2 H _5\right)_3 N }+\underset{ Y }{ CH _3 COOH }$ $1.$ Conductivity decreases and then increases
$Q.$ $\quad \underset{X}{ KI (0.1 M )}+\underset{ Y }{ AgNO _3(0.01 M )}$ $2.$ Conductivity decreases and then does not change much
$R.$ $\quad \underset{X}{ CH _3 COOH }+\underset{ K }{ KOH }$ $3.$ Conductivity increases and then does not change much
$S$. $\quad \underset{X}{ NaOH }+\underset{Y}{ HI }$ $4.$ Conductivity does not change much and then increases

Codes: $ \quad P \quad Q \quad R \quad S $ 

Given ${E^o}_{A{g^ + }/Ag} = 0.80\,V,\,\,\,{E^o}_{M{g^{2 + }}/Mg} =  - 2.37\,V,$ ${E^o}_{C{u^{2 + }}/Cu} = 0.34\,V,\,\,{E^o}_{H{g^{2 + }}/Hg}\, = 0.79\,V.$

Which of the following statements is correct ?

Globular protein is present in -
Dry air was drawn through bulbs containing pure water , then through bulbs containing a solution of $600\ grams$ of a non electrolyte in $360\ grams$ of water at the same temperature and finally through a tube in which dried $CaCl_2$ was placed. The solution bulb gained $1.5\ gram$ and the dried $CaCl_2$ gained $2\ gram$ .The Molecular mass of the solute is
The rate law for the reaction below is given by the expression $k\left[ A \right]\left[ B \right]$ 

                                          $A + B \to$ Product 

If the concentration of $B$ is increased from $0.1$ to $0.3\, mole$, keeping the value of $A$ at $0.1\, mole$, the rate constant will be

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R.$

Assertion $A:$ $3.1500\,g$ of hydrated oxalic acid dissolved in water to make $250.0\,mL$ solution will result in $0.1\,M$ oxalic acid solution.

Reason $R:$ Molar mass of hydrated oxalic acid is $126\,g\,mol ^{-1}$.

In the light of the above statements, chose the correct answer from the options given below:

Which of the following reactions does not yield an amine
$75\%$ of a first order reaction was completed in $ 32$ minutes when was $50\% $ of the reaction completed ........... $\min.$