Which one of the following aqueous solutions will exhibit highest boiling point?
Two solutions of a substance (non electrolyte) are mixed in the following manner:
480 ml of 1.5 M first solution + 520 mL of 1.2 M second solution
What is the molarity of the final mixture?
Benzene and toluene form nearly ideal solutions. At 20°C, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20°C for a solution containing 78 g of benzene and 46 g of toluene in torr is
How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.00 g? [Atomic masses: Na = 23, Cl = 35.5]
In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3rd of tetrahedral voids. The formula of the compound will be
If Z is a compressibility factor, van der Waals equation at low pressure can be written as
Equal masses of methane and oxygen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by oxygen is
According to the kinetic theory of gases, in an ideal gas, between two successive collisions a gas molecule travels
In van der Waals equation of state of the gas law, the constant b is a measure of
The bond order in NO is 2.5 while that in NO+ is 3. Which of the following statements is true for these two species?
A square planar complex is formed by hybridisation of which atomic orbitals?
Which of the following sets of quantum numbers is correct for an electron in 4f orbital?
Which of the following statements in relation to the hydrogen atom is correct?
If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will
With increase of temperature, which of these changes?
In the reaction,
2Al (s) + 6HCl (aq) → 2Al3+ (aq) + 6Cl– (aq) + 3H2 (g)
The molecular formula of a commercial resin used for exchanging ions in water softening is C8H7SO3Na (Mol. Wt. 206). What would be the maximum uptake of Ca2+ ions by the resin when expressed in mole per gram resin?
Which of the following is the energy of a possible excited state of hydrogen?
The ionic radii (in Å) of N3–, O2– and F– are respectively
Which of the following compounds is not an antacid?
In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false?
Which polymer is used in the manufacture of paints and lacquers?
In a compound C, H and N atoms are present in 9:1:3.5 by weight. Molecular weight of compound is 108. Molecular formula of compound is
The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 metres per second is approximately (Planck's constant, h = 6.63 × 10–34 Js)
Which one of the following compounds has the smallest bond angle in its molecule?
For an ideal gas, number of moles per litre in terms of its pressure P, gas constant R and temperature T is
The enthalpy change for a reaction does not depend upon the
Butene-1 may be converted to butane by reaction with
On mixing a certain alkane with chlorine and irradiating it with ultraviolet light, it forms only one monochloroalkane. This alkane could be
2-Methylbutane on reacting with bromine in the presence of sunlight gives mainly
Presence of a nitro group in a benzene ring
The reaction of toluene with Cl2 in presence of FeCl3 gives predominantly
Which of the following reactions will yield 2, 2-dibromopropane?
The hydrocarbon which can react with sodium in liquid ammonia is
One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 u. The alkene is
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of