The correct increasing order of the ionic radii is
If the domain of the function $f(x)=\frac{[x]}{1+x^2}$, where $[x]$ is greatest integer $\leq x$, is $[2,6)$, then its range is
Let a circle $C_1$ be obtained on rolling the circle $x^2+y^2-4 x-6 y+11=0$ upwards 4 units on the tangent $T$ to it at the point $(3,2)$ Let $C_2$ be the image of $C_1$ in $T$ Let $A$ and $B$ be the centers of circles $C_1$ and $C_2$ respectively, and $M$ and $N$ be respectively the feet of perpendiculars drawn from $A$ and $B$ on the $x$-axis. Then the area of the trapezium AMNB is:
Cyclohexylamine when treated with nitrous acid yields (P) On treating (P) with $PCC$ results in (Q) When $(Q)$ is heated with dil. $NaOH$ we get $(R)$ The final product $(R)$ is :
In the following halogenated organic compounds the one with maximum number of chlorine atoms in its structure is :
A hydrocarbon ' $X$ ' with formula $C _6 H _8$ uses two moles of $H _2$ on catalytic hydrogenation of its one mole On ozonolysis, ' $X$ ' yields two moles of methane dicarbaldehyde The hydrocarbon ' $X$ ' is :
Let the mean and standard deviation of marks of class A of $100$ students be respectively $40$ and $\alpha$ (> 0 ), and the mean and standard deviation of marks of class B of $n$ students be respectively $55$ and 30 $-\alpha$. If the mean and variance of the marks of the combined class of $100+ n$ students are respectively $50$ and $350$ , then the sum of variances of classes $A$ and $B$ is :
Graph of X-ray frequency (v)n v/s atomic number (Z) is linear. Find the value of n.
For which of the following aqueous ion, spin only magnetic moment is 3.87 BM?
Correct order of strength of H-bond in the following -:(A) Liquid water(B) Ice (C) Impure water
Statement-I: Noradrenaline is one of the neurotransmitter.
Statement-II: Low level of noradrenaline is not cause of depression in humans.
In light of the above statements, choose the correct answer from the options given below
\(H_2O_2\) behave like reducing agent in which of the following reactions:
Which one amongst the following are good oxidizing agents?(A) \( \text{Sm}^{\text{2+}}\)(B) \(\text{Ce}^{\text{2+}}\)(C)\( \text{Ce}^{\text{4+}}\)(D) \(\text{Tb}^{\text{4+}}\)Choose the most appropriate answer from the options given below:
Match List I with List II:
Choose the correct answer from the options given below:
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion (A) : Benzene is more stable than hypothetical cyclohexatriene Reason (R) : The delocalised π-electrons cloud is attracted more strongly by the nuclei of the carbon atoms than the electron cloud localised between two carbon atoms.In the light of the above statements, choose the correct answer from the options given below
Number of unpaired electron in highest occupied molecular orbital of following species is :\(N_2, N ^+_ 2 , O_2, O^+_ 2 \) ?