Practice questions
88551 published questions with worked solutions.
- The moment of inertia of a solid disc rotating along its diameter is 2.5 times higher than the moment of inertia of a ring...
- In a measurement, it is asked to find modulus of elasticity per unit torque applied on the system. The measured quantity has...
- Two iron solid discs of negligible thickness have radii R_1 and R_2 and moment of intertia I_1 and I_2, respectively. For R_2 =...
- The incorrect decreasing order of atomic radii is :
- Statement I : In the oxalic acid vs KMnO_4 (in the presence of dil H_2SO_4) titration the solution needs to be heated initially...
- Match the List-I with List-II List-I (Redox Reaction): (A) CH_4(g) + 2O_2(g) CO_2(g) + 2H_2O(l) (B) 2NaH(s) 2Na(s) + H_2(g) (C)...
- A weak acid HA has degree of dissociation x. Which option gives the correct expression of pH – pK_a) ?
- Consider "n" is the number of lone pair of electrons present in the equatorial position of the most stable structure of ClF_3....
- The metal ion whose electronic configuration is not affected by the nature of the ligand and which gives a violet colour in...
- In a multielectron atom, which of the following orbitals described by three quantum numbers with have same energy in absence of...
- Consider the following elements In, Tl, Al, Pb, Sn and Ge. The most stable oxidation states of elements with highest and lowest...
- Which of the following oxidation reactions are carried out by both K_2Cr_2O_7 and KMnO_4 in acidic medium ? A. I^- I_2 B. S^ 2- S...
- Statement I : D-glucose pentaacetate reacts with 2, 4-dinitrophenylhydrazine. Statement II : Starch, on heating with concentrated...
- Quantitative analysis of an organic compound (X) shows following % composition. C : 14.5%; Cl : 64.46%; H : 1.8% (Empirical...
- The molarity of a 70% (mass/mass) aqueous solution of a monobasic acid (X) is _______× 10^ -1 M(Nearest integer) [Given : Density...
- The formation enthalpies, H_f^ for H_ (g) and O_ (g) are 220.0 and 250.0 kJ mol^ -1 , respectively, at 298.15 K, and H_f^ for...
- Let A, B, C be three points in xy-plane, whose position vectors are given by 3 i + j , i + 3 j and a i +(1-a) j respectively with...
- If the components of a = i + j + k along and perpendicular to b =3 i + j - k respectively, are 16 11 (3 i + j - k ) and 1 11 (-4...
- If α + iβ and γ + iδ are the roots of x^2 - (3-2i)x - (2i-2) = 0, i= -1 , then αγ + βδ is equal to :
- Let S be the set of all the words that can be formed by arranging all the letters of the word 'GARDEN'. From the set S, one word...