The unit of rate constant for first order reaction is:

The half-cell reaction is the one that:

Royal records were engraved on 'tamra-patra' in ancient times. 'Tamra patra' here means

Read the passage carefully and answer the questions
The transition metals and their compounds are known for their catalytic activity. This activity is ascribed to their ability to adopt multiple oxidation states and to form complexes. Vanadium(V) oxide (in Contact Process), finely divided iron, and nickel (in Catalytic Hydrogenation) are some of the examples. Catalysts at a solid surface involve the formation of bonds between reactant molecules and atoms of the surface of the catalyst (first row transition metals utilise 3d and 4s electrons for bonding). This has the effect of increasing the concentration of the reactants at the catalyst surface and also weakening of the bonds in the reacting molecules (the activation energy is lowering). Also because the transition metal ions can change their oxidation states, they become more effective as catalysts.
In the Wacker process the oxidation of ethene to ethanal is catalysed by _______

Arrange the following electrodes in decreasing order of the strength of the respective ions as reducing agent.
(A) \(Cu ^{2+}+2 e^{-} \rightarrow Cu ( s ) \quad E^{\circ}=0.34 V\)
(B) \(Su ^{2+}+2 e^{-} \rightarrow Su (s) \quad E^{\circ}=-0.14 V\)
(C) \(AgBr ( s )+e^{-} \rightarrow Ag ( s )+ Br ^{-} \quad E ^{\circ}=0.10 V\)
(D) \(Pb ^{2+}+2 e^{-} \rightarrow Pb ( s ) \quad E^{\circ}=-0.13 V\)
Choose the correct answer from the options given below:

Choose the correct statement about molar conductivity, \(\Lambda_m\)

Which one of the following ligands forms a chelate?

If \(\frac{3 x-5}{6}+8 \geq 4+\frac{2 x}{3}\), then

Arrange the following electrolytes in the increasing order of van't Hoff factor (i) for complete dissociation of solute.
(A) \([\text{Co}(\text{NH}_3)_6]\text{Cl}_3\)
(B) \(\text{MgCl}_2\)
(C) \(\text{K}_4[\text{Fe}(\text{CN})_6]\)
(D) \(\text{KCl}\)
Choose the correct answer from the options given below:

A specific characteristic of a sample is known as a:

A mobile phone costing ₹ 50000 has a useful life of 5 years. If the annual depreciation is ₹ 5000, then by using a linear method, its scrap value is

If three balls are drawn one by one without replacement from a bag containing 5 white and 4 red balls, then the probability distribution of the number of white balls drawn is

The capacity to generate a whole plant from any cell is called: