HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Chemistry

What is Grignard reagent? How is it prepared? Why are they prepared under anhydrous condition?

Predict all the alkenes that would be formed by dehydrohalogenation of the following alkyl halide.

1. 2-chloro-2-methylbutane
2. 3-bromo-2,2,3-trimethylpentane

In a carbinol system of nomenclature tert.butyl alcohol is named as _______________

For a reaction \[\ce{HCl_{(aq)} + H2O_{(l)} ⇌ H3O^+_{ (aq)} + Cl^-_{ (aq)}}\]

Which of the following is a conjugate acid-base pair?

The theory which explain amphoteric nature of water is ______.

Label the one conjugate acid-base pair in the following reaction.

\[\ce{CO^{2-}_{3(aq)} + H2O_{(l)} ⇌ OH^- + HCO^-_3}\]

Classify the following species into Lewis acids and Lewis bases.

Explain the amphoteric nature of water.

Kohlrausch law is applicable for the solution _______.

SI unit of conductivity is _______.

The following reactants CANNOT be converted into carboxylic acid?

In case of weak electrolyte the graph Λ vs `sqrt"c"` is _______.

Write IUPAC name of Phthaldehyde?

The molar conductivity and conductivity of AgNO₃ solution is 121.4 Ω^–1 cm² mol^–1 and 2.428 × 10^–3 Ω^–1 cm^–1 at 25 °C. What is molar concentration of AgNO₃ solution?

Give SI unit of resistivity.

Write the number of products when a mixture of ethanal and propanal is reacted with dilute alkali?

Write an equation that shows the relationship between molar conductivity and degree of dissociation of weak electrolyte.

Write applications of Kohlrausch’s Law.

Write three important steps required to determine molar conductivity.

Calculate molar conductivities at zero concentration for CaCl₂ and NaCl.

Given: molar ionic conductivities of Ca²⁺, Cl^–, Na⁺ ions are respectively, 104, 76.4, 50.1 Ω–1 cm^–2 mol^–1