List of practice Questions

In Cycas, pollination takes place in

In an isobaric process, when temperature changes from $T_1$ to $T_2$, $\Delta S$ is equal to

If $m_1, m_2, m_3$ and $m_4$ are respectively the magnitudes of the vectors $a_1 = 2i - j + k, a_2 = 3i - 4j - 4 k $ $a_3 = i + j - k$ and $a_4 = - i + 3j + k , $ then the correct order of $m_1, m_2, m_3 $ and $m_4$ is

If heavy water is taken as solvent instead of normal water while performing Cannizaro reaction, the products of the reaction are

If $a_1$ and $a_2$ are two non-collinear unit vectors and if $|a_1 + a_2| = \sqrt3$ ,then the value of $(a_1 - a).(2a_1 + a_2)$ is

The standard emf of a cell involving one electron charge is found to be $0.591\, V$ at $25^{\circ} C$. The equilibrium constant of the reaction is $\left(1\, F =96500\, C\, mol ^{-1}, R=8.314\, J\, K ^{-1} mol ^{-1}\right)$

A buffer solution is used in

Highest number of antibiotics are produced by

Which of the following orbital diagram violates Faults exclusion principle?

The geometry of sulphate ion is

Which of the following is an aromatic compound?

By which of the following processes, pure nitrogen gas is prepared?

In the following reaction, $C _{2} H _{5} OH + CH _{3} COOH \xrightarrow[- H _{2} O ]{\text { Conc. } H _{2} SO _{4}} CH_3COOC_2H_5 \,\,\,\, C_2H_5OH$ acts as

$HCl $ molecule contains

The $C-H$ bond distance is the longest in

Which represents the correct order of first ionisation potential of third period elements?

Haeckel's biogenetic law is

Given $P(x) = x^4 + ax^3 + bx^2 + cx + d$ such that $x = 0$ is the only real root of $P'(x) = 0$ . If $P(-1) < P(1)$ , then in the interval $[-1, 1]$

Genes are made up of

If $\left|Z-\frac{4}{z}\right|=2$, then the maximum value of $\left|Z\right|$ is equal to

Three distinct points $A, B$ and $C$ are given in the $2$ - dimensional coordinate plane such that the ratio of the distance of any one of them from the point $(1, 0)$ to the distance from the point $( - 1, 0)$ is equal to $\frac{1}{3}$. Then the circumcentre of the triangle $ABC$ is at the point

In a binomial distribution $B\left(n. p=\frac{1}{4}\right)$, if the probability of at least one success is greater than or equal to $\frac{9}{10}$, then n is greater than

If P and Q are the points of intersection of the circles $x^2 + y^2 + 3x + 7y + 2p - 5 = 0$ and $x^2 + y^2 + 2x + 2y - p^2 = 0$ , then there is a circle passing through $P, Q$ and $(1, 1)$ for

The projections of a vector on the three coordinate axis are $6, - 3, 2$ respectively. The direction cosines of the vector are

If $A, B$ and $C$ are three sets such that $A \cap B = A \cap C$ and $A \cup B = A \cup C$ , then