List of practice Questions

An alcohol, X (C\(_5\)H\(_{12}\)O) in the presence of Cu/573K gives Y (C\(_5\)H\(_{10}\)). The reactants required for the preparation of X are
Identify the two reactions A (I II) and B (I III) respectively in the following set of reactions.
The synthetic detergent used in toothpaste is of type X. Animal starch is Y.
X and Y respectively are
Which of the following represents the correct structure of \( \beta\text{-}D\text{-}(-)\text{-} \) Fructofuranose?
Which of the following statements is not correct for glucose?
The metal purified by Mond process is X. The number of unpaired electrons in X is
Complete hydrolysis of Xenon hexafluoride gives HF along with compound X. The hybridisation in X is
Identify the set which does not have ambidentate ligand(s).
The critical micelle concentration (CMC) of a soap solution is \( 5 \times 10^{-4} \, \text{mol L}^{-1} \). Identify the correct statements about this solution.
[I.] The micelle is stable if the soap solution concentration is \( 10^{-7} \, \text{mol L}^{-1} \)
[II.] The micelle is stable if the soap solution concentration is higher than \( 5 \times 10^{-4} \, \text{mol L}^{-1} \)
[III.] Micelles are also known as associated colloids.
Match the following:
List-I (Reaction)
  • A) Hydrogenation of vegetable oils
  • B) Decomposition of potassium chlorate
  • C) Oxidation of SO2 in lead chamber process
  • D) Oxidation of ammonia in Ostwald’s process

List-II (Catalyst)
  • I) Ni
  • II) MnO2
  • III) Pt
  • IV) NO(g)
KMnO\(_4\) oxidises hydrogen sulphide in acidic medium. The number of moles of KMnO\(_4\) which react with one mole of hydrogen sulphide is
The number of linear and crosslinked polymers in the following respectively are:
Novolac, Nylon 6,6, Bakelite, PVC, melamine
The following graph is obtained for an ideal solution containing a non-volatile solute. \(x\)- and \(y\)-axes represent, respectively
containing a non-volatile solute
What are B and C respectively in the following set of reactions? \[ \text{C (1,2-dibromopropane)} \xrightarrow{\text{Zn},\ \Delta} \text{A} \xrightarrow[\text{(ii) NaNH}_2]{\text{(i) alc. KOH}} \text{B} \xrightarrow{\text{Lindlar Catalyst}} \text{C} \]
Observe the following statements about dry cell:
It is a primary battery.
Zinc vessel acts as cathode.
A paste of moist \( \text{NH}_4\text{Cl}, \text{MnO}_2 \), and \( \text{ZnCl}_2 \) is present between two electrodes.
The potential of this cell is 1.5 V.
The crystal system with edge lengths \( a \ne b \ne c \) and axial angles \( \alpha = \beta = \gamma = 90^\circ \) is 'x' and number of Bravais lattices for it is 'y'. x and y are
Consider the sets I, II and III. Identify the set(s) which is (are) correctly matched.
[I.] Staggered ethane>eclipsed ethane \dotfill torsional strain
[II.] 2,2-Dimethylbutane>2-methylpentane \dotfill boiling point
[III.] cis-But-2-ene>trans-But-2-ene \dotfill dipole moment
For a reaction, the graph of \( \ln k \) (on y-axis) and \( 1/T \) (on x-axis) is a straight line with a slope \( -2 \times 10^4 \text{ K} \). The activation energy of the reaction (in kJ mol\(^{-1}\)) is \((R = 8.3~\text{J K}^{-1} \text{mol}^{-1})\)
A solution is prepared by adding 124 g of ethylene glycol (molar mass = 62 g mol\(^{-1}\)) to \( x \) g of water to get a 10 m solution. What is the value of \( x \) (in g)?
Identify the correct statements from the following
I.
All alkaline earth metals give hydrides on heating with hydrogen.
II.
Calcium hydroxide is used to purify sugar.
III.
\( \mathrm{BeCl_2} \) is a dimer in gaseous phase.
The number of amphoteric oxides from the following is
\(\mathrm{CO_2, GeO_2, SnO_2, PbO_2, CO, GeO, SnO, PbO}\)
Consider the following:
Statement I:
\( \mathrm{H_2O_2} \) acts as an oxidising as well as reducing agent in both acidic and basic media.
Statement II:
10V \( \mathrm{H_2O_2} \) sample means it contains 6% (w/v) \( \mathrm{H_2O_2} \)
Select the correct statements from the following
A)
Aluminium liberates \( \mathrm{H_2} \) gas with dil.\( \mathrm{HCl} \) but not with aqueous \( \mathrm{NaOH} \).
B)
Formula of sodium metaborate is \( \mathrm{Na_3BO_3} \)
C)
Boric acid is a weak monobasic acid
D)
For thallium, +1 state is more stable than +3 state.
At T(K), \(K_{\text{sp}}\) of two ionic salts MX\(_2\) and MX is \(5 \times 10^{-13}\) and \(1.6 \times 10^{-11}\) respectively. The ratio of molar solubility of MX\(_2\) and MX is
Which of the following statements is not correct?