STANDARD Chemistry Questions

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

A real gas behaves like an ideal gas if its

Identify the basic amino acid from the following.

Homogeneous mixture of two or more than two components is called

Which of the following is a primary halide?

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

The general formula of carbohydrates is

System in which there is no exchange of matter, work or energy from surroundings is

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

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

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

Which of the following carbonyl compounds is most polar?

The nucleus of helium contains

Which of the following is not an ore of aluminium?

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

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

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

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

A reaction is said to be in equilibrium when

Which of the following statements is not true?

The number of chain isomers possible for hydrocarbon C₅H₁₂ is

What is the formal charge on carbon atom in the following two structures: :Ö: S = C = S: :Ö: :Ö: C :Ö: :Ö: ²⁻

U = q + w, is mathematical expression for

Which of the following is an example of gaseous solution?

Aluminium is diagonally related to (in periodic table)

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 an allylic halide?

Which of the following reactions is possible at anode?

Which of the following is not a redox reaction?

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

Wurtz reaction may be used to unite

The two functional groups characteristic of sugars are

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

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

Cellulose is a

Propanone can be prepared from ethyne by

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

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

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

Which of the following formulae is not correctly depleted?

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

Which of the following is phenol?

Benedict's solution is used to identify

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

Amine that cannot be prepared by Gabriel phthalimide synthesis is

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

Which of the following halides is not correct according to the name and classification?

The work done during the expansion of a gas from 4 dm³ to 6 dm³ against a constant external pressure of 3 atm is (1 L atm = 101.32 J)

An element of atomic number 29 belongs to