List of practice Questions

At 298 K, $ K_{\text{sp}} $ of Cu(OH)₂ is $ 2.2 \times 10^{-20} $. What is its solubility in $ 10^{-7} \, \text{M} \, \text{CuCl}_2 $ solution?
Find the correct matching
A) Carrot -- Flowers appear from the same point of peduncle
B) Cocos -- Flowers protected by the modified bract
C) Achyranthes -- Flowers appear in the varied lengths of pedicels
D) Cassia -- Flowers appear on the flattened peduncle
Choose the correct statement regarding ciliary movement

Choose the correct option for the matching:

Column – IColumn – II
A. Daphniai. Basking
B. Desert Lizardii. Blubber
C. Aquatic mammalsiii. Cyclomorphosis
D. Sea gullsiv. Eliminates salts through nostrils
B-cells are stimulated to proliferate and differentiate into memory cells by
Choose the incorrect statements regarding Hardy–Weinberg equilibrium
A. There should be no migration
B. There should be differential reproductive success
C. Population should be large without random mating
D. Mutations should not occur
The ratio of the flux-linkage to current is
For the reaction $2A(g) + B(g) \rightarrow 2C(g)$, if $\Delta U^\circ = -8.80$ kJ mol$^{-1}$ and $\Delta S^\circ = -50$ J K$^{-1}$ mol$^{-1}$ at 300 K, the correct statement is:
The relation \( I = I_0 \cos^2 \theta \) is (I\( _0 \) - Intensity of incident light on the analyser, I - intensity of emergent light from the analyser, \( \theta \) - angle between plane of polarization and the axis of analyser)
Which of the following is not correct about Grignard reagent?
A freely falling body has attained a velocity of \( 2 \, \text{ms}^{-1} \). If it is opposed by air resistance, total distance before stopping is:
Two cells with same emf E but different internal resistances, $r_1$ and $r_2$ are connected in series to an external resistance R. If the potential difference across the first cell is zero then the value of R is
The number of extensive and intensive properties in the following list is respectively: Mass, temperature, pressure, enthalpy, heat capacity, internal energy, density
Hyaline cartilage occurs in
  • A. Sternal part of the ribs.
  • B. Pubic Symphysis.
  • C. Epiphyseal plate.
  • D. Vocal chords.
  • E. Epiglottis.
  • F. Endoskeleton of cyclostomes.
In microtubules, the peripheral doublets are interconnected by linkers called
n-type semiconductor is formed when germanium is doped with:
At T (K) and pressure P, the diffusion rate of an ideal gas is 120 mL min$^{-1}$. What is the time taken (in sec.) for 3000 mL of this gas for diffusion at the same temperature and pressure?
A solid sphere is pushed on a horizontal surface such that it slides with a speed 3.5 m/s initially without rolling. The sphere will start rolling without slipping when its velocity becomes:
In the given circuit, when \( A = 1 \), \( B = 1 \) the values of \( X \) and \( Y \) respectively are
A = 1, B = 1 the values of X and Y respectively
Which of the following is not the application of adsorption?
If the work done by 2 mol of an ideal gas during isothermal reversible expansion from 5 L to 50 L is -189.1 L atm at constant pressure, the temperature of the gas (in °C) is
Vinegar and butter are the sources for which of the following carboxylic acids respectively?
In which year was Kolleru lake declared as a Bird Sanctuary?
What is the name of Darwin's ship which he used for world voyage?
A mixture of gasses consists of 16 g of Helium and 16 g of Oxygen. The ratio of specific heats of the mixture is nearly