Standard Books Chemistry Questions

A reaction is said to be in equilibrium when

Identify the basic amino acid from the following.

Which of the following is a primary halide?

What is the formal charge on carbon atom in the following two structures:

:Ö: S = C = S:

:Ö: :Ö: C :Ö: :Ö:

²⁻

For every one ³⁷Cl isotope there are three ³⁵Cl isotopes in a sample of chlorine. What will be the average atomic mass of chlorine?

The general formula of carbohydrates is

The number of ions given by [Pt(NH₃)₆]Cl₄ in aqueous solution will be

The nucleus of helium contains

The number of chain isomers possible for hydrocarbon C₅H₁₂ is

Which of the following carbonyl compounds is most polar?

For a reaction, P + Q → 2R + S. Which of the following statements is incorrect?

Which one of the following is a 'd-block element'?

Which one of the following reducing agents is likely to be most effective in bringing about the following change? R−C−NH₂

Homogeneous mixture of two or more than two components is called

The cell reaction of the galvanic cell : Cu(s)|Cu²⁺(aq)||Hg²⁺(aq)|Hg(l) is

In allylic and benzylic alcohols, –OH group is attached to

Which of the following represents the given sequence of hybridisation of carbon atoms from left to right sp², sp², sp, sp?

Which of the following statements is not true?

The element X, Y, Z and T have the indicated electronic configurations. Starting with the innermost shell, which is the most metallic element

Which of the following is not an ore of aluminium?

The two functional groups characteristic of sugars are

Which of the following formulae is not correctly depleted?

Which of the following is phenol?

The reason behind the lower atomic radius of Ga as compared to Al is

Zr and Hf have almost equal atomic and ionic radii because of

Two elements X and Y combine to form a compound XY. Under what conditions the bond formed between them will be ionic?

Wurtz reaction may be used to unite

Propanone can be prepared from ethyne by

Cellulose is a

Aluminium is diagonally related to (in periodic table)

The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is

What is the end product in the following sequence of reactions? COOH → PCl₅ → 2NH₃ → Br₂/KOH

Which of the following reactions is possible at anode?

Which of the following is an example of gaseous solution?

For the reaction, 2N₂O₅ → 4NO₂ + O₂, the rate of reaction can be expressed in terms of time and concentration by the expression:

Study the given figure and label X, Y and Z.

Which of the following is not an allylic halide?

Arrange the following complexes in increasing order of conductivity of their solutions. (i) [Co(NH₃)₃Cl₃] (ii) [Co(NH₃)₄Cl₂]Cl (iii) [Co(NH₃)₆]Cl₃ (iv) [Co(NH₃)₅Cl]Cl₂

Which of the following is not a redox reaction?

The hybridisation of carbons of C – C single bond of HC ≡ C – CH = CH₂ is

In the Geiger-Marsden scattering experiment, in case of head-on collision the impact parameter should be

An alkene CH₃CH = CH₂ is treated with B₂H₆ in presence of H₂O₂. The final product formed is

An isotone of ⁷⁶₃₂Ge is

Which of the following is not correctly matched with the given example?

Which of the following primary and secondary valencies are not correctly marked against the compound?

An element of atomic number 29 belongs to

What is the mass of carbon dioxide which contains the same number of molecules as are contained in 40 g of oxygen?

The correct order of decreasing bond lengths of CO, CO₂ and CO₃²⁻ is

What is the mole fraction of glucose in 10% w/W glucose solution?

Study the following sequence of reactions and identify the compounds (X) and (Y).