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A solid cylinder of mass 2 kg and radius 4 cm rotating about its axis at the rate of 3 rpm. The torque required to stop after $2\pi$ revolutions is
Based on electrode potentials in the table below: $\text{Cu}^{2+}(aq) + e^- \rightarrow \text{Cu}^+(aq) \quad E^\circ = 0.15 \text{ V}$ $\text{Cu}^+(aq) + e^- \rightarrow \text{Cu}(s) \quad E^\circ = 0.50 \text{ V}$ The value of $E^\circ_{\text{Cu}^{2+}/\text{Cu}}$ will be:
For the reversible reaction: $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g) + \text{heat}$. The equilibrium shifts in a forward direction:
The correct order of increasing C-X bond reactivity toward nucleophiles among the following is: I. [Missing] II. [Missing] III. $(\text{CH}_3)_3\text{C-X}$ IV. $(\text{CH}_3)_2\text{CH-X}$
Which of the following statements is not correct?
Consider the nitration of benzene using mixed conc. $H_2SO_4$ and $HNO_3$. If a large amount of $KHSO_4$ is added to the mixture, the rate of nitration will be:
The pH of the solution containing $50\text{ mL}$ each of $0.10\text{ M}$ sodium acetate and $0.01\text{ M}$ acetic acid is: [Given $\text{p}K_a$ of $\text{CH}_3\text{COOH} = 4.57$]
Phenylacetylene undergoes a reaction with dilute $\text{H}_2\text{SO}_4$ in the presence of $\text{HgSO}_4$ to yield:
The reaction among the following that proceeds through an electrophilic substitution reaction is:
Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value?
The conjugate bases of Bronsted acids $H_2O$ and $HF$ are respectively:
Which of the following methods is incorrect for the synthesis of alkenes?
The order of decreasing reactivity towards an electrophilic reagent for the following compounds is: (i) Benzene (ii) Toluene (iii) Chlorobenzene (iv) Phenol
Which composition will make the basic buffer?
The correct reaction among the following is:
X and Y in the above-mentioned reaction are respectively:
Match the bond line structures of hydrocarbons given in List-I with the corresponding boiling points given in List-II. List-II (Boiling point in K): (i) 300.9 (ii) 282.5 (iii) 309.1 (iv) 341.9 Choose the correct answer from the options given below:
The major product formed in the dehydrohalogenation reaction of 2-bromopentane is pent-2-ene. This product formation is based on:
The dihedral angle of the least stable conformer of ethane is:
Among the given complexes, the complex having the highest paramagnetic behaviour is: (At. No. Ti = 22, Cr = 24, Co = 27, Zn = 30)