Camphor in nitrogen gas, is an example of __________.
a.
liquid solution
b.
solid solution
c.
gaseous solution
d.
aqueous solution
No explanation saved for this question yet.
Q3mcq1 mark
Which of the following is not a subdivision of structural isomerism?
a.
Coordination isomerism
b.
Linkage isomerism
c.
Ionisation isomerism
d.
Geometrical isomerism
No explanation saved for this question yet.
Q4mcq1 mark
Cumene hydroperoxide on hydrolysis with dilute acid gives _________.
a.
alcohol and phenol
b.
only phenol
c.
phenol and acetone
d.
alcohol and acetone
No explanation saved for this question yet.
Q5mcq1 mark
An example for pseudo first-order reaction is,
a.
The decomposition of gaseous ammonia on a hot platinum surface
b.
Photochemical reaction between hydrogen and chlorine
c.
Inversion of cane sugar
d.
Hydrogenation of ethene
No explanation saved for this question yet.
Q6mcq1 mark
The hybridisation of ‘N’ atom in trimethyl amine is,
a.
sp^3
b.
sp^2
c.
sp
d.
dsp^2
No explanation saved for this question yet.
Q7mcq
The IUPAC name of $HC_3 - CH - CH_2 - C - H$ with Br at the CH and O on the C.
a.
3–bromobutyraldehyde
b.
2–bromopropanaldehyde
c.
3–bromobutanal
d.
2–bromobutanal
No explanation saved for this question yet.
Q7mcq1 mark
The IUPAC name of $HCCHCHHC$ (with structure shown as $Br$ on $CH$ and $O=CH$ on the terminal carbon) is
a.
3–bromobutyraldehyde
b.
2–bromopropanaldehyde
c.
3–bromobutanal
d.
2–bromobutanal
No explanation saved for this question yet.
Q8mcq1 mark
Select non-semiconductor from the following,
a.
silicon
b.
carbon-black
c.
gallium arsenide
d.
doped silicon
No explanation saved for this question yet.
Q9mcq1 mark
Given below are two statements :
Statement I : Ammonolysis of alkyl halides has the disadvantage of yielding a mixture of primary, secondary, tertiary amines and quaternary ammonium salt.
Statement II : Tertiary amine is obtained as a major product by taking large excess of ammonia in ammonolysis of alkyl halides.
In the light of the above statements, choose the appropriate answer from the options given below :
a.
Statement I is incorrect but Statement II is correct
b.
Both Statement I and Statement II are correct
c.
Both Statement I and Statement II are incorrect
d.
Statement I is correct but Statement II is incorrect
No explanation saved for this question yet.
🎉 10 Free Sample Solutions Completed
Unlock All 47 Questions & Solutions
Sign up free in seconds to unlock step-by-step AI answers for the remaining 37 questions.
Two compounds ‘A’ and ‘B’ were being tested for their boiling points. It was observed that ‘A’ started boiling after ‘B’, when both were subjected to same conditions. If the compound ‘B’ is acetone, which of the following can be compound ‘A’?
a.
Propanal
b.
Propan-1-ol
c.
Methoxyethane
d.
n-Butane
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
Match the following given in List - I with List - II:
List - I: i) $V_2O_5$, ii) $TiCl_4$ with $Al(CH_3)_3$, iii) $PdCl_2$, iv) Nickel complexes
List - II: A) Oxidation of ethyne to ethanal, B) Polymerisation of alkynes, C) Oxidation of $SO_2$ in the manufacture of sulphuric acid, D) Manufacture of polyethylene
Choose the correct option:
a.
i – C, ii – D, iii – A, iv – B
b.
i – A, ii – B, iii – C, iv – D
c.
i – A, ii – C, iii – B, iv – D
d.
i – C, ii – A, iii – D, iv – B
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
Sufficient amount of 2-methylpropan-2-ol heated with 20% phosphoric acid at 358 K gives main product ‘X’ with the elimination of water and tert-butyl alcohol undergoes dehydration when it is passed over heated copper at 573 K gives ‘Y’. Pick the correct statement regarding X and Y.
a.
The boiling points of ‘X’ and ‘Y’ are equal
b.
The boiling point of ‘X’ is greater than the boiling point of ‘Y’
c.
The boiling point of ‘X’ is lesser than the boiling point of ‘Y’
d.
At room temperature both ‘X’ and ‘Y’ exists as a solids
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
Molarity (M), molality (m) and mole fraction ($\chi$) are some methods for expressing concentration of solutions. Which of these are temperature dependent? Give reason.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
$[Co(NH_{3})_{5}Br]SO_{4}$ is an octahedral coordination compound. Write its IUPAC name and draw the diagram which indicates the splitting of d-orbitals in above complex with respect to CFT (Crystal Field Theory).
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
What is lanthanoid contraction? Write one comparison and one difference between lanthanoids and actinoids with respect to oxidation states shown by them.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
Write the facial (fac) and meridional (mer) isomeric structures of $[Co(NH_{3})_{3}(NO_{2})_{3}]$. Mention the coordination number of a metal ion in an above complex.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
Lead storage battery is commonly used as a secondary cell in automobiles. What is secondary cell? Write down the reactions occurs at anode and cathode during discharging of the lead storage battery.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
a) Write the $S_{N}2$ mechanism for the conversion of chloromethane to methanol. Mention its order.
b) What is racemic mixture? Represent the butan-2-ol in racemic mixture form.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
a) Amylose and Amylopectin are two components of the starch. Write any two differences between them.
b) List any two nitrogenous bases commonly found in both RNA and DNA.
c) Name the enzyme that catalyses hydrolysis of maltose into glucose.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
a) Write the mechanism of addition of HCN (Hydrogen Cyanide) to carbonyl group in presence of base.
b) Explain Rosenmund reduction with chemical equation.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
a) Describe carbylamine reaction with suitable chemical equation.
b) Explain the conversion of aniline to benzene diazonium chloride with chemical equation.
c) Among aryl amines and ammonia which is more basic?
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
a) Lucas reagent is an important reagent which helps to distinguish between three classes of alcohols. Write the chemical composition of the Lucas reagent and explain how the above reagent helps to distinguish $1^{\circ}$ and $3^{\circ}$-alcohols?
b) Illustrate preparation of ether by Williamson synthesis with a general chemical equation.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
An organic compound ‘A’ on treatment with ethanoic acid in the presence of hydrochloric acid gas as a catalyst produces an ester ‘B’. ‘A’ on oxidation with $CrO_{3}$ in an anhydrous medium gives ‘C’. ‘C’ is heated with concentrated KOH followed by acidification with dilute HCl generates ‘A’ and ‘D’. Three moles of ‘D’ reacts with $PCl_{3}$ gives three moles of compound with molecular formula HCOCl and ‘E’. ‘D’ is reduced to ‘A' by lithium aluminium hydride followed by hydrolysis. Write the molecular formulas of the compounds ‘A’, ‘B’, ‘C’, ‘D’ and ‘E’.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
The initial concentration of $N_{2}O_{5}$ in the following first order reaction $2N_{2}O_{5}(g) \rightarrow 4NO_{2}(g) + O_{2}(g)$ was $1.24 \times 10^{-2} mol L^{-1}$ at 318K. The concentration of $N_{2}O_{5}$ after 60 minutes was $0.20 \times 10^{-2} mol L^{-1}$. Calculate the rate constant of the reaction at 318 K.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
Calculate the osmotic pressure in Pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185000 in 450 mL of water at $37^{\circ}C$. $[R = 8.314 \times 10^{3} PaLK^{-1}mol^{-1}]$
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
The standard electrode potential for Daniel cell is 1.1 V. Calculate the standard Gibbs energy for the reaction : $Zn(s) + Cu^{2+}(aq) \rightarrow Zn^{2+}(aq) + Cu(s)$
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
The vapour pressure of pure liquids ‘A’ and ‘B’ are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
The rate constant of a first order reaction increases from $2 \times 10^{-2} s^{-1}$ to $4 \times 10^{-2} s^{-1}$ when the temperature changes from 300 K to 310 K. Calculate the energy of activation ($E_a$). [ $\log 2 = 0.3010, \log 2.5 = 0.3979, \log 4 = 0.6021, R = 8.314 \text{ JK}^{-1} \text{mol}^{-1}$ ]
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
The conductivity of 0.001028 mol $L^{-1}$ acetic acid is $4.95 \times 10^{-5} S \text{ cm}^{-1}$. Calculate its dissociation constant if $\Lambda_m^{\circ}$ for acetic acid is $390.5 \text{ S cm}^2 \text{mol}^{-1}$.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
