Practice questions
88551 published questions with worked solutions.
- The workdone in an adiabatic change in an ideal gas depends upon only :
- Given below are two statements : one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) :...
- The coordinates of a particle with respect to origin in a given reference frame is (1, 1, 1) meters. If a force of F = i - j + k...
- The maximum speed of a boat in still water is 27 km/h. Now this boat is moving downstream in a river flowing at 9 km/h. A man in...
- Total number of nucleophiles from the following is :- NH_3, PhSH, (H_3C)_2S, H_2C=CH_2, HO^-, H_3O^+, (CH_3)_2CO, >=NCH3
- The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidising...
- The molar conductivity of a weak electrolyte when plotted against the square root of its concentration, which of the following is...
- At temperature T, compound AB_ 2(g) dissociates as AB_ 2(g) AB_ (g) + 1 2 B_ 2(g) having degree of dissociation x (small compared...
- Choose the correct statements. (A) Weight of a substance is the amount of matter present in it. (B) Mass is the force exerted by...
- The correct increasing order of stability of the complexes based on _o value is : (I) [Mn(CN)_6]^ 3- (II) [Co(CN)_6]^ 4- (III)...
- Match List-I with List-II. List-I (Complex): (A) [MnBr_4]^ 2- (B) [FeF_6]^ 3- (C) [Co(C_2O_4)_3]^ 3- (D) [Ni(CO)_4] List-II...
- For a Mg | Mg²⁺ (aq) || Ag⁺(aq) | Ag the correct Nernst Equation is :
- The correct option with order of melting points of the pairs (Mn, Fe), (Tc, Ru) and (Re, Os) is :
- 1.24 g of AX_2 (molar mass 124 g mol⁻¹) is dissolved in 1 kg of water to form a solution with boiling point of 100.0156°C, while...
- The reaction A_2 + B_2 2AB follows the mechanism A_2 k_ -1 k_1 A + A (fast) A + B_2 k_2 AB + B (slow) A + B AB (fast) The overall...
- An element 'E' has the ionisation enthalpy value of 374 kJ mol⁻¹. 'E' reacts with elements A, B, C and D with electron gain...
- Match List – I with List – II. List – I (Carbohydrate): (A) Amylose (B) Cellulose (C) Glycogen (D) Amylopectin List – II (Linkage...
- Given below are two statements : Statement (I) : The radii of isoelectronic species increases in the order. Mg^ 2+ < Na^+ < F^- <...
- The sum of sigma (σ) and pi(π) bonds in Hex-1,3-dien-5-yne is _______.
- If A_2B is 30% ionised in an aqueous solution, then the value of van't Hoff factor (i) is _____×10⁻¹.