HSC Science (Electronics) १२ वीं कक्षा - Maharashtra State Board Important Questions for Chemistry

Write any two properties of actinides.

Explain the trend in an Oxidation state of 3d elements.

Write two applications of lanthanoids.

Write two applications of actinoids.

Which of the following transition element shows maximum oxidation state?

Write the name of the alloy used in the Fischer Tropsch process in the synthesis of gasoline.

Salts of Ti⁴⁺ are colourless. Give reason.

Calculate spin only magnetic moment of divalent cation of transition metal with atomic number 25.

Give the properties of Lanthanoids.

The spin only magnetic moment of Mn²⁺ ion is ______.

Give the classification of alloys with examples.

Give the electronic configuration of gadolinium (Z = 64).

The spin only magnetic moment of Cr³⁺ cation is ______.

Write the balanced chemical equations when acidified \[\ce{K2Cr2O7}\] reacts with \[\ce{H2S}\].

Write the atomic numbers of transuranium elements.

Why is Sc³⁺ colourless while Ti³⁺ coloured? (Atomic number Sc = 21, Ti =22)

What is the geometry of chromate ion?

1. Tetrahedral                    
2. Octahedral
3. Trigonal planer              
4. Linear

Why do interstitial compounds have higher melting points than corresponding pure metals?

What is the molecular formula of chromyl chloride?

(A) CrO₂Cl₂

(B) CrOCl₂

(C) CrCl₃

(D) Cr₂OCl₂

What is the position of iron (Z = 26) in periodic table?