JEE Main questions
34568 published questions with worked solutions.
- When a body slides down from rest along a smooth inclined plane making an angle of 30° with the horizontal, it takes time T. When...
- The average translational kinetic energy of N_2 gas molecules at ...........°C becomes equal to the K.E. of an electron...
- A uniform heating wire of resistance 36 is connected across a potential difference of 240 V. The wire is then cut into half and...
- A steel rod with y = 2.0 10^ 11 Nm^ -2 and =10^ -5 °C^ -1 of length 4 m and area of cross-section 10 cm^2 is heated from 0°C to...
- A 2 kg steel rod of length 0.6 m is clamped on a table vertically at its lower end. It is free to rotate in vertical plane. The...
- A carrier wave with amplitude of 250 V is amplitude modulated by a sinusoidal base band signal of amplitude 150 V. The ratio of...Not in JEE or NEET syllabus
- An engine is attached to a wagon through a shock absorber of length 1.5 m. The system with a total mass of 40,000 kg is moving...
- Calamine and Malachite, respectively, are the ores of :Not in JEE Main or NEET syllabus
- In the following sequence of reactions a compound A, (molecular formula C_6H_ 12 O_2) with a straight chain structure gives a C_4...
- Match List – I with List II. List-I (Colloid Preparation Method): (a) Hydrolysis (b) Reduction (c) Oxidation (d) Double...Not in JEE Main or NEET syllabus
- The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (M^ 2+...
- Monomer units of Dacron polymer are :Not in JEE Main or NEET syllabus
- In the given chemical reaction, colors of the Fe^ 2+ and Fe^ 3+ ions, are respectively : 5Fe^ 2+ +MnO^ 4- +8H^+ Mn^ 2+...
- The stereoisomers that are formed by electrophilic addition of bromine to trans-but-2-ene is/are
- Given below are two statements : Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone...
- The potassium ferrocyanide solution gives a Prussian blue colour, when added to :
- Identify the element for which electronic configuration in +3 oxidation state is [Ar]3d^5:
- The molar solubility of Zn(OH)_2 in 0.1 M NaOH is x 10^ -18 M. The value of x is _____(Nearest integer) (Given : The solubility...
- For the reaction 2NO_2(g) N_2O_4(g), when S = –176.0 JK^ -1 and H = –57.8 kJ mol^ -1 , the magnitude of G at 298 K for the...
- The sum of oxidation states of two silver ions in [Ag(NH_3)_2] [Ag(CN)_2] complex is _______.