JEE Main questions
34568 published questions with worked solutions.
- Red light differs from blue light as they have :
- The energy dissipated by a resistor is 10 mJ when an electric current of 2 mA flows through it in 1s. The resistance is _______ ....
- If one wants to remove all the mass of the earth to infinity in order to break it up completely. The amount of energy that needs...
- A deviation of 2° is produced in the yellow ray when prism of crown and flint glass are achromatically combined. Taking...
- A body of mass 2kg moves under a force of (2 i +3 j +5 k ) N. It starts from rest and was at the origin initially. After 4s, its...
- A swimmer can swim with velocity 12 km/h in still water. Water flowing in a river has velocity 6 km/h. The direction with respect...
- A closed organ pipe of length L and an open organ pipe contain gases of densities _1 and _2 respectively. The compressibility of...
- For an ideal heat engine, the temperature of the source is 127°C. In order to have 60% efficiency the temperature of the sink...
- Which of the following reduction reaction CANNOT be carried out with coke ?Not in JEE Main or NEET syllabus
- Identify the elements X and Y using the ionisation energy values given below : Ionization energy (kJ/mol): 1st, 2nd X: 495, 4563...
- The secondary structure of protein is stabilised by:
- Which of the following polymer is used in the manufacture of wood laminates ?Not in JEE Main or NEET syllabus
- Statement I : Sodium hydride can be used as an oxidising agent. Statement II : The lone pair of electrons on nitrogen in pyridine...
- The INCORRECT statement regarding the structure of C_ 60 is :
- The correct statements about H_2O_2 are : (A) used in the treatment of effluents. (B) used as both oxidising and reducing agents....
- Ammonolysis of Alkyl halides followed by the treatment with NaOH solution can be used to prepare primary, secondary and tertiary...
- Which of the following is least basic ?
- The characteristics of elements X, Y and Z with atomic numbers, respectively, 33, 53 and 83 are :
- Match List-I with List-II : List-I: (a) Lassaigne's Test (b) Cu(II) oxide (c) Silver nitrate (d) The sodium fusion extract gives...
- The INCORRECT statements below regarding colloidal solutions is :Not in JEE Main or NEET syllabus