Practice questions
88551 published questions with worked solutions.
- An ideal gas goes from an initial state to final state. During the process, the pressure of gas increases linearly with...
- The least count of a screw gauge is 0.01 mm. If the pitch is increased by 75% and number of divisions on the circular scale is...
- A wire of resistance 9 Ω is bent to form an equilateral triangle. Then the equivalent resistance across any two vertices will be...
- The temperature of 1 mole of an ideal monoatomic gas is increased by 50°C at constant pressure. The total heat added and change...
- Which of the following linear combination of atomic orbitals will lead to formation of molecular orbitals in homonuclear diatomic...
- Which of the following ions is the strongest oxidizing agent ? (Atomic Number of Ce = 58, Eu = 63, Tb = 65, Lu = 71]
- K_ sp for Cr(OH)_3 is 1.6 10^ -30 . What is the molar solubility of this salt in water?
- Let us consider an endothermic reaction which is non-spontaneous at the freezing point of water. However, the reaction is...
- Given below are two statements I and II. Statement I : Dumas method is used for estimation of "Nitrogen" in an organic compound....
- The carbohydrates "Ribose" present in DNA, is A. A pentose sugar B. present in pyranose from C. in "D" configuration D. a...
- The large difference between the melting and boiling points of oxygen and sulphur may be explained on the basis of
- Which of the following arrangements with respect to their reactivity in nucleophilic addition reaction is correct?
- Which of the following statement is true with respect to H_2O, NH_3 and CH_4? A. The central atoms of all the molecules are...
- Given below are two statements : Statement-I : The conversion proceeds well in the less polar medium. CH_3-CH_2-CH_2-CH_2-Cl HO^-...
- 37.8 g N_2O_5 was taken in a 1 L reaction vessel and allowed to undergo the following reaction at 500 K 2N_2O_5(g) 2N_2O_4(g) +...
- Standard entropies of X_2, Y_2 and XY_5 are 70, 50 and 110 J K⁻¹ mol⁻¹ respectively. The temperature in Kelvin at which the...
- Xg of benzoic acid on reaction with aq. NaHCO_3 release CO_2 that occupied 11.2 L volume at STP. X is _____ g.
- Among the following cations, the number of cations which will give characteristic precipitate in their identification tests with...
- Consider the following reaction occurring in the blast furnace. Fe_3O_4(s) + 4CO(g) 3Fe(l) + 4CO_2(g) 'x' kg of iron is produced...
- The equation of the chord, of the ellipse x^2 25 + y^2 16 =1, whose mid-point is (3,1) is :