List of practice Questions

The work function of a metal is \(4.0\text{ eV}\). If the metal is irradiated with radiation of wavelength \(200\text{ nm}\), the maximum kinetic energy of the photoelectrons would be about:
(Use \(hc = 1240\text{ eV}\cdot\text{nm}\))

Two wires of the same material have lengths in the ratio \(1 : 2\) and radii in the ratio \(1 : 2\). The ratio of their specific resistances will be:

Arora and Gurmeet were partners in a firm sharing profits and losses in the ratio of 3 : 2. Starting from 1st October, 2024 Arora withdrew ₹ 30,000 at the beginning of each quarter for his personal use. Interest on drawings was to be charged @ 12% per annum. Interest on Arora's drawings for the year ended 31st March, 2025 was:

On hydrolysis, which of the following carbohydrates gives only β-glucose ?

Consider the following compounds : Chlorobenzene (I), 2,4,6-trinitrochlorobenzene (II), 2,4-dinitrochlorobenzene (III), 4-nitrochlorobenzene (IV). The correct order of increasing ease of nucleophilic substitution reactions of these compounds is :

On electrolysis of very dilute aqueous solution of NaCl using platinum electrodes :

The correct order of decreasing basic strength in aqueous solution of the following is :

The mole fraction of a solute in 2.0 molal aqueous solution is :

Which of the following transition metals shows +1 and +2 oxidation states ?

The oxidation number of Pt in [Pt(en)₂Cl₂]²⁺ is :

Which of the following product is formed when salicylic acid is treated with (CH₃CO)₂O in the presence of acid ?

Which reagent is used to distinguish between primary, secondary and tertiary amines ?

Which of the following nitrogenous bases is NOT found in DNA?

Fill in the blanks with the appropriate Phrasal Verb from the options given below: A snake might be hidden in this garden. You are advised to _____ the grass.

Fill in the blank with the appropriate word from the options given below: The director is a perfectionist, _____ he is seldom satisfied with average performance.

Fill in the blank with the appropriate word from the options given below: “It is really difficult to deal _____ those people who do not want to listen to others.”

Fill in the blanks with the correct word from the options given below: “Even if he had been doing his job, as a man of character he _____ not have cooperated with standard.”

Fill in the blanks with the appropriate Phrasal Verbs from the options given below: “The representative walked out as the negotiation broke _____ and no compromise could be made.”

Match the words given in List-I with the phrases given in List-II:

Choose the correct answer from the options given below:

Choose the correct option given below to fill in the blank: “I could not stand in that room as there was a _____ smell.”

Fill in the blank by selecting the appropriate word from the options given below: “As Rohit was driving fast, his car hit the divider and fell _____.”

Fill in the blanks with the correct pair of words arranged sequentially: “_____ now that his views on how to control pollution _____ worth listening to.”

Fill in the blanks in the sentences given in List-I with the appropriate words given in List-II:

Choose the correct answer from the options given below:

Rearrange the following phrases to form a meaningful sentence:
• (A) following the guidelines of the Supreme Court,
• (B) I appeal to the people of Delhi,
• (C) as responsible citizens,
• (D) to burn only green crackers Choose the most appropriate answer from the options given below:

Fill in the blank with the correct option: “My friend had barely _____ to pull out of the garage when he realised that he had left the dog inside.”