Ortho–Nitrophenol is less soluble in water than p– and m– Nitrophenols because :

The molecule having smallest bond angle is :

Aspirin is known as :

Which of the following on thermal decomposition yields a basic as well as an acidic oxide?

The incorrect expression among the following is :

In the given transformation, which of the following is the most appropriate reagent ?

The density of a solution prepared by dissolving 120 g of urea (mol. Mass = 60 u ) in 1000g of water is 1.15 g/mL. The molarity of this solution is :

Which method of purification is represented by the following equation : Ti (s) + 2I2 (g) \buildrel {523K} \over \longrightarrow TiI4 (g) \buildrel {1700K} \over \longrightarrow Ti (s) + 2I2 (g)

Kf for water is 1.86K kg mol–1. If your automobile radiator holds 1.0 kg of water, how many grams of ethylene glycol (C2H6O2) must you add to get the freezing point of the solution lowered to –2.8oC ?

The equilibrium constant (KC) for the reaction N2(g) + O2(g) $$\to$$ 2NO(g) at temperature T is 4 $$\times$$ 10–4. The value of KC for the reaction, NO(g) $$\to$$ 1/2N2(g) + 1/2O2(g) at the same temperature is :

The standard reduction potentials for Zn2+/ Zn, Ni2+/ Ni, and Fe2+/ Fe are –0.76, –0.23 and –0.44 V respectively. The reaction X + Y2+ $$\to$$ X2+ + Y will be spontaneous when :

The species which can best serve as an initiator for the cationic polymerization is :

Iron exhibits + 2 and +3 oxidation states. Which of the following statements about iron is incorrect?

In which of the following pairs the two species are not isostructural ?

Which of the following compounds can be detected by Molisch’s test ?

Which one of the following statements is correct ?

If $$A={\sin }^{2}x+{\cos }^{4}x,$$ then for all real $$x$$:

Let $$A$$ and $$B$$ be two symmetric matrices of order $$3$$. Statement - 1 : $$A(BA)$$ and $$(AB)$$$$A$$ are symmetric matrices. Statement - 2 : $$AB$$ is symmetric matrix if matrix multiplication of $$A$$ with $$B$$ is commutative.

The number of values of $$k$$ for which the linear equations $$4x+ky+2z=0,kx+4y+z=0$$ and $$2x+2y+z=0$$ possess a non-zero solution is :

Consider $$5$$ independent Bernoulli's trials each with probability of success $$p.$$ If the probability of at least one failure is greater than or equal to $$31\frac{3}{2},$$ then $$p$$ lies in the interval :