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

Explain the position of actinoids in the periodic table.
What is the action of sulphur on lanthanoids? Calculate the magnetic moment of divalent ion in aqueous solution it its atomic number is 24.

Explain the following properties of group 16 elements :
1) Electro negativity
2) Melting and boiling points
3) Metallic character
4) Allotropy

What is the role of the following compound -
CaF₂ in metallurgy of aluminum?

How are ethers classified?

What is the action of sodium on arsenic.

What is the action of Magnesium on bismuth.

Write features of a reversible process.

The process of extracting a soluble material from an insoluble solid by dissolving out in a suitable solvent is known as _________. 

Explain the geometry of [Cu(NH₃)₄]²⁺ on the basis of hybridisation [ At. No. Cu = 29 ]. 

What are 'd' and 'f' block elements?

What is the action of the following on isopropyl methyl ether? 
a. Cold HI
b. Hot HI

Define:
a. Analgesics 
b. Antimicrobials 

An antihistamine drug is _______.

Which of the following is n-type semiconductor?

Choose the most correct answer.

In Frenkel defect, _______.

Which of the following is not correct?

Pb has fcc structure with edge length of unit cell 495 pm. Radius of Pb atom is ______.

Answer the following in one or two sentences.

What is the unit cell?

Cryoscopic constant depends on ______.

Select the most appropriate option.

The correct thermodynamic conditions for the spontaneous reaction at all temperatures are _______.