List of practice Questions

Quantasomes are present in
Phenylketonuria is an autosomal recessive disorder located on chromosome
Phenol is heated with $CHCl_{3}$ and alcoholic $KOH$ when salicylaldehyde is produced. This reaction is known as
Ornithorhynchus is an example of
One haemoglobin carries how many molecules of $O_2$?
On the set of all natural numbers $N$, which one of the following $*$ is a binary operation ?
$ {NO^+}$ ligand is
Neglecting the density of air, the terminal velocity obtained by a raindrop of radius $0.3\, mm$ falling through air of viscosity $1.8 \times 10^{-5}\, N \,s \,m ^{-2}$ will be
If $N_{0}$ represents Avogadro's number, the number of valence electrons in $4.2 \,g$ of nitride ion $\left( N ^{3-}\right)$ is
Muscular tetany can be caused by deficiency of
Most accepted theory for ascent of sap is
Malpighian tubules are
Jumping genes in maize were discovered by
Benzamide on reaction with $POCl_{3}$ gives
Which of the following is not oxidised by ozone?
Match the following. The correct answer is
During an allergic reaction, the binding of antigens to $IgE$ antibodies initiates a response, in which chemicals cause the dilation of blood vessels and a host of other physiological changes. Such chemicals are
Which of the following reagents converts both acetaldehyde and acetone to alkanes?
When NO reacts with $FeSO _{4}$, a brown coloured complex is formed. In the complex, the coordination number of Fe is $+6$.
The value of van der Waals' constant ' $a$ ' for ammonia is larger than that of nitrogen gas. Molecular weight of ammonia is smaller than nitrogen gas.
Pollen mother cells (PMCs) are the first male gametophytic cells. Each PMC gives rise to two pollens.
Dark reaction occurs only at night in the stroma of chloroplast. CO fixation occurs only during C cycle.
For the reaction, $2 NO (g)+ O _{2}(g) \rightleftharpoons 2 NO _{2}(g),$ increase in pressure favours the formation of $NO _{2}$. The reaction is exothermic.
Most of the economically important fibre yielding plants belong to family
From a group of $ 8 $ boys and $ 3 $ girls, a commitee of $ 5 $ members to be formed. Find the probability that $ 2 $ particular girls are included in the committe is