List of practice Questions

Which of the following reactions are not feasible?

The Molar conductivity of 0.05M solution of MgCl$_2$ is 194.5 ohm$^{-1}$ cm$^2$ per mole at room temperature. A Conductivity cell with electrodes having 3.0 cm$^2$ surface area and 1.0 cm apart is filled with the solution of MgCl$_2$. What would be the resistance offered by the conductivity cell?
At 298K, the conductivity of KCl solutions of molarity 0.1, 0.01 and 1.0 M are recorded as X, Y and Z, S cm$^{-1}$ respectively. The correct relation between X, Y and Z is
Which one of the following has the highest molar conductivity?
The minimum voltage (in V) required to bring about the electrolysis of 1M copper (II) sulphate solution at 298 K is (Given E$^\circ_{Cu^{2+}/Cu}$ = 0.34V and E$^\circ_{H_2O/H^+}$ = -1.23V)
For an adiabatic change in a system, the condition which is applicable is
Identify the correct statements from the following
(A) The compressibility factor (Z) for an ideal gas is 1
(B) Uranium isotopes (\( ^{235}U \) and \( ^{238}U \)) are separated by converting them into \( UF_6 \) vapours
(C) Decrease in temperature increases the kinetic energy of gas molecules
If the standard enthalpy of sublimation \( (\Delta_{sub}H^\circ) \) of solid \( CO_2 \), naphthalene, Li and Na are 25.2, 73.0, 162, 108 kJ mol\(^{-1} \) respectively, the order of sublimation of these substances with temperature is
Which one of the following options is correct for \[ q = -ve, \, w = +ve \{ (where \(q\) and \(w\) are heat and work respectively)} \]
11.0 L of an ideal gas at constant external pressure of 5 atm is compressed isothermally to a final volume of one liter. The heat absorbed and work done respectively, during this compression (in L atm) are
Which of the following reaction is not feasible?
When 3 moles of gas A is mixed with 1 mole of gas B at room temperature and 1 atm pressure, the entropy of mixing is
(Given log 3=0.4771,
log 4 = 0.6020)
Calculate the number of moles of carbon mono oxide in the following reaction
CH3CH2CHO \(\stackrel{hv}{→}\) CH3CH3 + CO
If the light irradiated has λ= 3020 A°, the quantum yield of reaction 0.54 and the light energy absorbed is 15000 erg in a given time.
Which of the following is more reliable?
The examples of chain silicate and sheet silicate respectively are
The conductivity of a solution containing 2.08 g of anhydrous barium chloride in 200 mL solution is $6 \times 10^{-3} \, \text{ohm}^{-1} \, \text{cm}^{-1}$. The molar conductivity of the solution (in $\text{ohm}^{-1} \, \text{cm}^{2} \, \text{mol}^{-1}$) is $x \times 10^{2}$. The value of $x$ is (Atomic mass of Ba = 137, Cl = 35.5)
Imagine a pentagon shaped building. The walls of the building are sides of the pentagon, and there is a watchtower at each vertex. Each watchtower can have guards who can watch two walls connected to the watchtower. What is the minimum number of guards required if each wall needs to be watched by at least 3 guards?
Identify the correct statement related to amino acids
A vitamin (X) is water soluble but can be stored in the body. Deficiency of X causes which disease?
Sulphur containing amino acids of the following are
A. Serine
B. Cysteine
C. Lysine
D. Methionine
Which of the following bases are present both in DNA and RNA?
bases are present both in DNA and RNA
Which of the following is not correctly matched for enzymatic reactions?

Match the following

List – IList – II
A. Beri BeriI. Riboflavin
B. ScurvyII. Thiamine
C. CheilosisIII. Pyridoxine
D. RicketsIV. Ascorbic acid
 V. Vitamin D
The source of vitamin, whose deficiency causes scurvy is:
Given below are two statements
Assertion (A): Hydrolysis of sucrose results in change in the optical rotation from dextro (+) to laevo (–)
Reason (R): Both the products from the hydrolysis are leavorotatory