Practice questions
88551 published questions with worked solutions.
- Given below are two statements : Statement I: For a mechanical system of many particles total kinetic energy is the sum of...
- A conducting circular loop is rotated about its diameter at a constant angular speed of 100 rad/s in a magnetic field of 0.5 T...
- A capacitor P with capacitance 10 10^ -6 F is fully charged with a potential difference of 6.0 V and disconnected from the...
- A cylindrical conductor of length 2 m and area of cross-section 0.2 mm² carries an electric current of 1.6 A when its ends are...
- An insulated cylinder of volume 60 cm³ is filled with a gas at 27°C and 2 atmospheric pressure. Then the gas is compressed making...
- At T(K), 100 g of 98 % H_2SO_4 (w/w) aqueous solution is mixed with 100 g of 49 % H_2SO_4(w/w) aqueous solution. What is the mole...
- A + 2 B AB2. 36.0 g of 'A' (Molar mass : 60 g mol⁻¹) and 56.0 g of 'B' (Molar mass : 80 g mol⁻¹) are allowed to react. Which of...
- Given below are two statements : Statement-I: The first ionization enthalpy of Cr is lower than that of Mn. Statement-II : The...
- Correct statements regarding Arrhenius equation among the following are : (A) Factor e^ -Ea/RT corresponds to fraction of...
- Given below are two statements : Statement-I : Element 'X' and 'Y' are the most and least electronegative elements, respectively...
- Match List-I with List-II. List-I (Reaction of glucose with): (A) Hydroxylamine (B) Br_2 water (C) Excess acetic anhydride (D)...
- Among H_2S, H_2O, NF_3, NH_3 and CHCl_3, identify the molecule X with lowest dipole moment value. The number of lone pairs of...
- Given below are two statements : Statement-I : C<O<N<F is the correct order in terms of first ionization enthalpy values....
- Which of the following mixture gives a buffer solution with pH=9.25? Given : pK_b(NH_4OH)=4.75
- The energy of first (lowest) Balmer line of H atom is x J. The energy (in J) of second Balmer line of H atom is :
- Identify the correct statements : A. Hydrated salts can be used as primary standard. B. Primary standard should not undergo any...
- [Ni(PPh_3)_2Cl_2] is a paramagnetic complex. Identify the INCORRECT statements about this complex. A. The complex exhibits...
- The compound A, C_8H_8O_2 reacts with acetophenone to form a single product via cross Aldol condensation. The compound A on...
- If the enthalpy of sublimation of Li is 155 kJ mol⁻¹, enthalpy of dissociation of F_2 is 150 kJ mol⁻¹, ionization enthalpy of Li...
- The mass of benzanilide obtained from the benzoylation reaction of 5.8 g of aniline, if yield of product is 82%, is ____ g...