List of practice Questions

Natality refers to�

Select the correct match :

A group 13 element 'X' reacts with chlorine gas to produce a compound $XCl _{3} . XCl _{3}$ is electron deficient and easily reacts with $NH _{3}$ to form $Cl _{3} X \leftarrow NH _{3}$ adduct; however, $XCl _{3}$ does not dimerise. $X$ is

At a particular temperature, the ratio of molar conductance to specific conductance of 0.01 M NaCl solution is

The value of rate constant of a pseudo first order reaction

Acidity of $BF_3$ can be explained on which of the following concepts ?

Which of the following, represents the variation of inductive reactance $(X_L)$ with the frequency of voltage source (v) ?

Which of the following aqueous solutions should have the highest boiling point ?

Very pure $N_2$ can be obtained by

The energy equivalent to a substance of mass 1 g is

In Karnataka, the normal domestic power supply AC is 220 V, 50 Hz. Here 220 V and 50 Hz refer to

For which one of the following systems at equilibrium, at constant temperature will the doubling of die volume cause a shift to the right?

For the reaction $2N_2O_5 \to 4NO_2 + O_2$, rate and rate constant are $1.02 \times 10^{-4}$ mol $lir^{-1}$ $sec^{-1}$ and $3.4 \times 10^{-5}$ $sec^{-1}$ respectively then concentration of $N_2O_5$ at that time will be

Which of the following is true for nucleolus

Select the incorrect match :

A person may be a haemophilic, only if his mother is a carrier or colourblind. The male parent cannot pass on a sex-linked gene to his son.

Which of the following organisms are known as chief producers in the oceans ?

Which among the following is not a prokaryote ?

Which of the following animals does not undergo metamorphosis ?

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.

The device or substances which do not obey Ohm?s law is/are

The monohybrid genotypic ratio 1 : 2 : 1 in F generation indicates

Isotonic solutions are solutions having the same

$1.0 \, g$ of Mg is burnt with 0.28 g of $O_2$ in a closed vessel. Which reactant is left in excess and how much ?

The charge required for the reduction of $1$ mol of $MnO_4^-$ to $MnO_2$ is