Practice questions
88551 published questions with worked solutions.
- Concentric metallic hollow spheres radii R and 4R hold charges Q_1 and Q_2 respectively. Given that surface charge densities of...
- Which of the following will NOT be observed when a multimeter (operating in resistance measuring mode) probes connected across a...
- If minimum possible work is done by a refrigerator in converting 100 grams of water at 0ºC to ice, how much heat (in calories) is...
- A block starts moving up an inclined plane of inclination 30º with an initial velocity of v_0. It comes back to its initial...
- A galvanometer coil has 500 turns and each turn has an average area of 3 10^ -4 m ^2. If a torque of 1.5 Nm is required to keep...
- When an object is kept at a distance of 30 cm from a concave mirror, the image is formed at a distance of 10 cm from the mirror....
- Consider the hypothetical situation where the azimuthal quantum number, takes values 0, 1, 2, .... n + 1. where n is the...
- The increasing order of the reactivity of the following compounds in nucleophilic addition reaction is : Propanal, Benzaldehyde,...
- The d-electron configuration of [ Ru(en)_3 ] Cl_2 and [ Fe(H_2O)_6 ] Cl_2 , respectively are :
- Match the following drugs with their therapeutic actions : List-I: (i) Ranitidine (ii) Nardil (Phenelzine) (iii) Chloramphenicol...Not in JEE Main or NEET syllabus
- Among the statements (I – IV), the correct ones are : (I) Be has smaller atomic radius compared to Mg. (II) Be has higher...
- The five successive ionization enthalpies of an element are 800, 2427, 3658, 25024 and 32824 kJ mol ^ -1 . The number of valence...
- The strengths of 5.6 volume hydrogen peroxide (of density 1g/mL) in terms of mass percentage and molarity (M), respectively, are...
- For the reaction 2A + 3B + 3 2 C 3P , which statement is correct?
- 6.023 10^ 22 molecules are present in 10 g of substance 'x'. The molarity of a solution containing 5 g of substance 'x' in 2L...
- An acidic solution of dichromate is electrolyzed for 8 minutes using 2A current. As per the following equation Cr_2O_7^ 2-...
- The volume (in mL) of 0.1 N NaOH required to neutralise 10 mL of 0.1 N phosphinic acid is .................... .
- The number of C = O groups present in a tripeptide Asp — Glu — Lys is ..................... .
- If 250 cm ^3 of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution...
- Let e_1 and e_2 be the eccentricities of the ellipse, x^2 25 + y^2 b^2 =1 (b < 5) and the hyperbola, x^2 16 - y^2 b^2 =1...