Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
In the light of the above statements, choose the correct answer from the options given below:
Find out the major product from the following reaction.
In the following reaction, 'B' is
'$\mathrm{X}$' is :
But-2-yne is reacted separately with one mole of Hydrogen as shown below :
A. A is more soluble than B.
B. The boiling point & melting point of A are higher and lower than B respectively.
C. A is more polar than B because dipole moment of A is zero.
D. $\mathrm{Br_2}$ adds easily to B than A.
Identify the incorrect statements from the options given below :
Choose the correct set of reagents for the following conversion.
trans $\left(\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}\right) \rightarrow \operatorname{cis}\left(\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}\right)$
The major products 'A' and 'B', respectively, are
The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement)
The correct sequence of reagents for the preparation of Q and R is :
Find out the major products from the following reactions.
In the following given reaction, 'A' is
For the given reaction
The total number of possible products formed by tertiary carbocation of A is ____________.
Explanation:
Total 4 products are possible through 3° carbocation
The number of possible isomeric products formed when 3-chloro-1-butene reacts with $\mathrm{HCl}$ through carbocation formation is __________.
Explanation:
Total Possible Isomeric product = 1+3 = 4
Molar mass of the hydrocarbon (X) which on ozonolysis consumes one mole of $\mathrm{O}_{3}$ per mole of $(\mathrm{X})$ and gives one mole each of ethanal and propanone is _________ $\mathrm{g}~ \mathrm{mol}^{-1}$
(Molar mass of $\mathrm{C}: 12 \mathrm{~g} \mathrm{~mol}^{-1}, \mathrm{H}: 1 \mathrm{~g} \mathrm{~mol}^{-1}$ )
Explanation:
Hydrocarbon $(\mathrm{X})$ is 2-methyl-but-2-ene $\left(\mathrm{C}_5 \mathrm{H}_{10}\right)$
And the molecular mass is $5(12)+10(1)=70$.
Number of bromo derivatives obtained on treating ethane with excess of $\mathrm{Br}_{2}$ in diffused sunlight is ___________
Explanation:
17 mg of a hydrocarbon (M.F. $\mathrm{C_{10}H_{16}}$) takes up 8.40 mL of the H$_2$ gas measured at 0$^\circ$C and 760 mm of Hg. Ozonolysis of the same hydrocarbon yields
The number of double bond/s present in the hydrocarbon is ___________.
Explanation:
Mole of $\mathrm{H}_{2}$ gas
$\Rightarrow 1 \times \frac{8.40}{1000}=\mathrm{n} \times 0.0821 \times 273$
$\Rightarrow \mathrm{n}=3.75 \times 10^{-4}$
Hydrogen molecule used for 1 molecule of hydrocarbon is 3
$=\frac{3.75 \times 10^{-4}}{1.25 \times 10^{-4}}=3$
Maximum number of isomeric monochloro derivatives which can be obtained from 2,2,5,5-tetramethylhexane by chlorination is _____________
Explanation:
Total numbers of isomer = 03
Arrange the following in the correct order of their acidic strength.
I. $\mathrm{H}_2 \mathrm{C}=\mathrm{CH}_2$
II. $\mathrm{CH} \equiv \mathrm{CH}$
III. $\mathrm{CH}_3-\mathrm{C} \equiv \mathrm{CH}$
IV. $\mathrm{CH}_3-\mathrm{CH}_3$
I $<$ II $<$ III $<$ IV
IV $<$ I $<$ III $<$ II
IV $<$ III $<$ II $<$ I
II $<$ III $<$ IV $<$ I
$ \mathrm{C}_3 \mathrm{H}_4+\mathrm{H}_2 \mathrm{O} \xrightarrow[333 \mathrm{~K}]{\mathrm{Hg}^{2+} / \mathrm{H}^{+}}[X] \stackrel{\text { Tautomerisation }}{\rightleftharpoons} Y $
$X$ and $Y$ are respectively
unsaturated alcohol, aldehyde
Âsaturated alcohol, ketone
unsaturated alcohol, ketone
saturated alcohol, aldehyde
Addition of HBr to propene in presence of a peroxide takes place contrary to Markownikoff rule. This can be explained by the mechanism involving
electrophile
free radical
nucleophile
carbene
The rate of attack of an electrophile is least when $X$ in the given compound is
$-\mathrm{NO}_2$
$-\mathrm{CH}_3$
$-OH$
$-\mathrm{NH}_2$
The aromatic compound/species with maximum number of $\pi$-electrons is
phenanthrene
naphthalene
cyclopentadienyl anion
cycloheptatrienyl cation
$ \text { In the conversion of } A \text { to } B \text {, the electrophile involved is } $
$ { }^{\oplus} \mathrm{CH}_3 $
$ \mathrm{Cl}^{\oplus} $
An alkene $X$ on ozonolysis gives a mixture of propan-2-one and methanal. What is $X$ ?
Propene
2-methylpropene
2-methylbut-1-ene
2-methylbut-2-ene
An alkene $X\left(\mathrm{C}_6 \mathrm{H}_{12}\right)$ on ozonolysis gave acetaldehyde and ethyl methyl ketone. What is the product formed when $X$ reacts with HBr ?
An alkene $X$ with formula $\mathrm{C}_4 \mathrm{H}_8$ does not exhibit geometrical isomerism. In the conversion of $X$ to $Y$, the correct sequence of reagents $A$ and $B$ used are ( $Y$ gives iodoform test)
$\mathrm{BH}_3, \mathrm{H}_2 \mathrm{O}_2 / \mathrm{OH}^{-}, \mathrm{PCC}$
$\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}, \mathrm{ZnCl}_2 / \mathrm{HCl}$
$\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}, \mathrm{Cu} / 573 \mathrm{~K}$
$\mathrm{BH}_3, \mathrm{H}_2 \mathrm{O}_2 / \mathrm{OH}^{-}, \mathrm{Cu} / 573 \mathrm{~K}$
An alkene $(X)$ on ozonolysis gives propanal and ethanal. What is $X$ ?
Pent-2-ene
Pent-1-ene
But-1-ene
But-2-ene
Match the following.
The correct answer is
A-I; B-II; C-III; D-IV
A-II; B-I; C-IV; D-III
A-IV; B-III; C-II; D-I
A-IV; B-II; C-III; D-I
$ \text { Identify ' } Z \text { ' in the following reaction sequence } $
The functional groups in $X$ and $Y$ are respectively.
Thus, the functional group in $X$ and $Y$ are
The major product ( $B$ ) will be formed as per anti-Markownikoff's addition.
$ \stackrel{\bullet}{\mathrm{Cl}}+\mathrm{CH}_{4} \rightarrow \mathrm{A}+\mathrm{B} $
A and B in the above atmospheric reaction step are :
Major product of the following reaction is
A compound ‘$\mathrm{A}$’ on reaction with ‘$\mathrm{X}$’ and ‘$\mathrm{Y}$’ produces the same major product but different by product '$a$' and '$b^{\prime}$. Oxidation of '$a$' gives a substance produced by ants.
'X' and 'Y' respectively are
Two isomers 'A' and 'B' with molecular formula C4H8 give different products on oxidation with KMnO4 in acidic medium. Isomer 'A' on reaction with KMnO4/H+ results in effervescence of a gas and gives ketone. The compound 'A' is
What will be the major product of following sequence of reactions?
Product 'A' of following sequence of reactions is
The major product in the following reaction
The product formed in the following reaction.
Given below are two statements :
Statement I : The presence of weaker $\pi$-bonds make alkenes less stable than alkanes.
Statement II : The strength of the double bond is greater than that of carbon-carbon single bond.
In the light of the above statements, choose the correct answer from the options given below :
Which of the following reagents / reactions will convert 'A' to 'B' ?
The major product 'A' of the following given reaction has _____________ sp2 hybridized carbon atoms.
Explanation:
Number of sp2 hybridised carbon atoms = 2
Explanation:
Explanation:
Explanation:
If the reaction sequence given below is carried out with 15 moles of acetylene, the amount of the product $\mathbf{D}$ formed (in $\mathrm{g}$ ) is ___________ .
The yields of $\mathbf{A}, \mathbf{B}, \mathbf{C}$ and $\mathbf{D}$ are given in parentheses.
[Given: Atomic mass of $\mathrm{H}=1, \mathrm{C}=12, \mathrm{O}=16, \mathrm{Cl}=35$ ]
Explanation:
Molecular formula of D is C8H8O2
Molar mass of D is ($12\times8+8\times1+16\times2$) = 136 g
$\therefore$ Mass of D is 136
The organic compound 5-allylcyclohex-3-ene-1-ol is reacted with cold, dilute, aqueous solution of $\mathrm{KMnO}_4$. The total number of hydroxyl group(s) $(-\mathrm{OH})$ present in the product is
1
2
3
5
$ \text { In this product, } 5-\mathrm{OH} \text { are present. } $The molecular formula of the product formed when benzene is reacted with excess of chlorine molecules under ultra-violet light is
$\mathrm{C}_6 \mathrm{Cl}_6$
$\mathrm{C}_6 \mathrm{H}_3 \mathrm{Cl}_3$
$\mathrm{C}_6 \mathrm{H}_2 \mathrm{Cl}_4$
$\mathrm{C}_6 \mathrm{H}_6 \mathrm{Cl}_6$
