HSC Science (Computer Science) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Chemistry

Write two uses of coordination compounds.

Identify the chiral molecule from the following.

CH₂OH-CO-(CHOH)₄-CH₂OH is an example of ______.

Why amines are basic in nature?

Among the following vinylic halide is ______.

Write preparation of ethyl cyanide from ethyl bromide.

Write two uses of neon.

Arrange the following in the increasing order of the property mentioned:

MF, MCl, MBr, MI (ionic character)

What are ligands?

\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.

\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.

Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

\[\ce{CH3C(C2H5)2CH2Br}\]

Define boiling point

Define cell constant.

Conductivity of a solution is 6.23 x 10^-5  Ω^-1cm^-1 and its resistance is 13710Ω. If the electrodes are 0.7cm apart, calculate the cross-sectional area of electrode.

Why is molality of a solution independent of temperature?

Define “zero order reaction”.

In a first order reaction x → y, 40% of the given sample of compound remains unreacted in 45 minutes. Calculate rate constant of the reaction.

A → B is a first order reaction with rate 6.6 × 10^-5m-s^-1. When [A] is 0.6m, rate constant of the reaction is

• 1.1 × 10^-5s^-1
• 1.1 × 10^-4s^-1
• 9 × 10^-5s^-1
• 9 × 10^-4s^-1

What is metamerism?