chemistry Question Bank - Sarthaks eConnect

Eutrophication of a lake means, it :–

Read the assertion and reason carefully to mark the correct option out of the options given :–

Assertion : Caro's acid has S atom in +6 oxidation state.
Reason : Caro's acid contains one peroxo `O_2^(2–)` group.

Which of the following statements is false about resonance contribution structures :–

Read the assertion and reason carefully to mark the correct option out of the options given :–

Assertion : `p–O_2N–C_6H_5COCH_3` is prepared by Friedel Crafts acylation of nitrobenzene.

Reason : Nitrobenzene easily undergoes electrophilic substitution reaction.

The anhydride of `HClO_4` is :–

The correct statement regarding pure water amongst the following is :–

The equilibrium constant for the reaction `N_2(g) + O_2(g) ⇌ 2NO(g) is 4×10^–4` at 200. In the presence of a catalyst, the equilibrium is attained 10 times faster. Therefore, the equilibrium constant in the presence of the catalyst at 200 K is :–

How many primary amines are possible for the formula `C_4H_11N` :–

A compound shwos no optical rotation in a given solvent. Which of the following statemetn is correct :–

White P reacts with cuastic soda, the products are `PH_3` and `NaH_2PO_2`. This reaction is an example of :–

If an aqueous solution at 25ºC has twice as many OH— as pure water. Its pOH will be :–

RMgX on reaction with `O_2` followed by hydrolysis gives

Which gas has more percentage in coal gas ?

Acetylene gas is obtained from the electrolysis of which of the following aqueous solution :–

The temperature of an ideal gas is increased from 140 K to 560 K. If at 140 K, the root mean square velocity of the gas molecule is V, at 560 K, it becomes :–

The reduction of alkyl halide with nascent hydrogen leads to the formation of :–

During a particular reaction, 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours, and so on. The unit of the rate constant is :–

For the reaction `R—Br -> R—O—N=O`, the suitable reagent is :–

The compound most likely to decolorize at solution of potassium permagnate is :–

The minimum quantity of `H_2S` needed to precipitate 64.5 of `Cu^(2+)` will be nearly :–

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