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

How is diethyl ether prepared by continuous etherification process?

Write the molecular and structural formula of BHA and BHT.

Define carbolic acid.

How carbolic acid is prepared from benzene sulphonic acid ?

Calcium carbonate used in the extraction of iron acts as _______.

(A) oxidising agent

(B) reducing agent

(C) gangue

(D) flux

Construct a labelled diagram for the following cell:

`Zn|Zn^(2+)(1M)||H^+(1M)|H_(2(g,1atm))|Pt`

In the following 

The compound ‘B’ is _______.
(A) Propan–1–amine

(B) Propan–2–amine

(C) Isopropylamine

(D) Dimethylamine

How ligands are classified? Explain with suitable examples.

Explain the following term

Flux

Explain any two chemical methods of food preservation.

In Van Arkel method of refining metal, impure zirconium is converted to unstable volatile
compound by heating it with _______.

(A) oxygen

(B) chlorine

(C) bromine

(D) iodine

Define isotonic solutions.

Write electronic configuration and two uses of neon. (Z = 10)

Write the electronic configuration of the following element:

Krypton (Z = 36)

Write cathode and anode reaction in a fuel cell.

Baeyer’s reagent is -'

(a) acidified potassium dichromate

(b) alkaline potassium dichromate

(c) alkaline potassium permanganate

(d) acidified potassium permanganate

What are isotonic solutions? Explain with one example.

Oxidation states of scandium are ___________.

In Van Arkel method for refining zirconium or titanium, the halogen used is __________.

What are ethers?