STANDARD Chemistry Questions

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

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

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

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

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

Which of the following statements is not true?

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

Homogeneous mixture of two or more than two components is called

The general formula of carbohydrates is

Which of the following is not an ore of aluminium?

Identify the basic amino acid from the following.

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

A reaction is said to be in equilibrium when

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

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

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

Which of the following carbonyl compounds is most polar?

Which of the following is a primary halide?

The number of chain isomers possible for hydrocarbon C₅H₁₂ is

A real gas behaves like an ideal gas if its

The nucleus of helium contains

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

Which of the following reactions is possible at anode?

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

Propanone can be prepared from ethyne by

Which of the following is not a redox reaction?

Cellulose is a

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

U = q + w, is mathematical expression for

Which of the following is not an allylic halide?

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

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

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

The two functional groups characteristic of sugars are

Which of the following is phenol?

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

Which of the following formulae is not correctly depleted?

Aluminium is diagonally related to (in periodic table)

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

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 is an example of gaseous solution?

Wurtz reaction may be used to unite

Amine that cannot be prepared by Gabriel phthalimide synthesis is

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

Benedict's solution is used to identify

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)

For the reaction, 2SO₂(g) + O₂(s) ⇌ 2SO₃(g), what is Kc when the equilibrium concentration of [SO₂] = 0.60M, [O₂] = 0.82 M and [SO₃] = 1.90M?

Which of the following correctly matched the bond line and condensed structure of the compounds?

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