HSC Science कक्षा ११ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

Write down the possible isomers of C₅H₁₁Br and give their IUPAC and common names.

Reagents and the conditions used in the reactions are given below. Complete the table by writing down the product and the name of the reaction.

Discuss the aromatic nucleophilic substitutions reaction of chlorobenzene.

Write a short note on raschig process.

Write a short note on Darzen’s process.

Assertion: Two mole of glucose contains 12.044 × 10²³ molecules of glucose

Reason: Total number of entities present in one mole of any substance is equal to 6.02 × 10²²

The number of water molecules in a drop of water weighing 0.018 g is

What is the empirical formula of the following?

Fructose (C₆H₁₂O₆) found in honey.

What is the empirical formula of the following?

Caffeine (C₈H₁₀N₄O₂) a substance found in tea and coffee.

Calculate the empirical and molecular formula of a compound containing 76.6% carbon, 6.38% hydrogen and rest oxygen its vapour density is 47.

A Compound on analysis gave Na = 14.31% S = 9.97% H = 6.22% and O = 69.5% calculate the molecular formula of the compound if all the hydrogen in the compound is present in combination with oxygen as water of crystallization. (molecular mass of the compound is 322).

The equilibrium constant for a reaction at room temperature is K₁ and that at 700 K is K₂ If K₁ > K₂, then

The formation of ammonia from N₂(g) and H₂(g) is a reversible reaction

\[\ce{N2(g) + 3H2(g) <=> 2NH3(g) + Heat}\]

What is the effect of increase of temperature on this equilibrium reaction.

Solubility of carbon dioxide gas in cold water can be increased by ______.

Electronic configuration of species M²⁺ is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶ and its atomic weight is 56. The number of neutrons in the nucleus of species M is

Assertion: The spectrum of He⁺ is expected to be similar to that of hydrogen.

Reason: He⁺ is also one electron system.

The electronic configuration of Eu (Atomic no. 63) Gd (Atomic no. 64) and Tb (Atomic no. 65) are:

The maximum number of electrons in a sub shell is given by the expression

If n = 6, the correct sequence for filling of electrons will be,

How many electrons in an atom with atomic number 105 can have (n + 1) = 8?