HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

For the reaction, \[\ce{3I^-(aq) + S2O^2-_8(aq) -> I^-_3(aq) + 2SO^2-_4(aq)}\]

`(d[SO_4^(2-)])/dt = 2.2 xx 10^(-2)` M/s at a particular time.

Calculate `(a) -(d[I^-])/dt   (b) -(d[S_2O_8^(2-)])/dt   (c) (d[I_3^-])/dt`

Write the name and formula of oxoacid of fluorine.

Name two kinds of nucleic acids.

Write the expression for work done in a chemical reaction.

______ is a gaseous element of group 16.

Define Amines.

Write the ring structure of glucose.

Identify A and B:

\[\ce{C6H5CH2Br ->[Alc.][KCN] A ->[Na/Ethanol] B}\]

What is the rate law for reaction

\[\ce{2NO_{2(g)}-> 2NO_{(g)} + O_{2(g)}}\]

Identify product in:

Identify product in:

Write the correct molecular formula of gypsum.

What are the nucleotides?

Discuss the trends in electronegativity and atomic radii for elements of group 16 17, 18. 

CH₂ OH - CO - (CHOH)₄ - CH₂ OH is an example of ______.

Identify the chiral molecule from the following.

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

The linkage present in Lactose is ______.

Among the following vinylic halide is ______.

Write preparation of ethyl cyanide from ethyl bromide.