Practice questions
88551 published questions with worked solutions.
- The position of a particle moving on x-axis is given by x(t) = A t + B ^2 t + Ct^2 + D, where t is time. The dimension of ABC D...
- Match the List-I with List-II List-I: (A) Pressure varies inversely with volume of an ideal gas. (B) Heat absorbed goes partly to...
- Consider a moving coil galvanometer (MCG) : A : The torsional constant in moving coil galvanometer has dimensions [ML²T⁻²] B :...
- A gun fires a lead bullet of temperature 300K into a wooden block. The bullet having melting temperature of 600 K penetrates into...
- What is the lateral shift of a ray refracted through a parallel-sided glass slab of thickness 'h' in terms of the angle of...
- The electric flux is = + where λ and σ are linear and surface charge density, respectively, ( ) represents
- The electric field of an electromagnetic wave in free space is E = 57 [7.5 10^6 t - 5 10^ -3 (3x+4y)](4 i -3 j ) N/C. The...
- A positive ion A and a negative ion B has charges 6.67 10^ -19 C and 9.6 10^ -10 C, and masses 19.2 10^ -27 kg and 9 10^ -27 kg...
- An ideal gas initially at 0ºC temperature, is compressed suddenly to one fourth of its volume. If the ratio of specific heat at...
- A force f = x^2y i +y^2 j acts on a particle in a plane x + y = 10. The work done by this force during a displacement from (0, 0)...
- The element that does not belong to the same period of the remaining elements (modern periodic table) is:
- Heat treatment of muscular pain involves radiation of wavelength of about 900 nm. Which spectral line of H atom is suitable for...
- Match the LIST-I with LIST-II List-I (Name reaction): (A) Swarts reaction (B) Sandmeyer's reaction (C) Wurtz Fittig reaction (D)...
- 2.8 10^ -3 mol of CO2 is left after removing 10^ 21 molecules from its 'x' mg sample. The mass of CO2 taken initially is Given :...
- The major product of the following reaction is : CH_3CH_2CH=O [ reflux ] excess HCHO, alkali ?
- Propane molecule on chlorination under photochemical condition gives two di-chloro products, "x" and "y". Amongst "x" and "y",...
- What amount of bromine will be required to convert 2 g of phenol into 2, 4, 6-tribromophenol ? (Given molar mass in g mol⁻¹ of C,...
- The correct set of ions (aqueous solution) with same colour from the following is :
- Given below are two statements : Statement I : In Lassaigne's test, the covalent organic molecules are transformed into ionic...
- Which of the following happens when NH4OH is added gradually to the solution containing 1M A²⁺ and 1M B³⁺ ions ? Given : K_ sp...