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How to obtain Steel from pig iron? (Ref. CBSE 2010 1m Ques)

Please answer according to a 1m marker ques...

What is the principal product of the following reaction?

The charge
on sol is due to the
adsorbed

[MP PMT
1985]

Gastric juice contains 3.0g of $HCl$ per litre. If a person produces 2.5 litre of gastric juice per day. How many antacid tablets each containing 400 mg of $Al$($OH{)}_3$ are needed to neutralize all the $HCl$ produced in one day ?

In the above reactions the compound 'A' is

The major product of the following reaction sequence is:

1. 54.265

The product formed in the reaction of $SOC{l}_2$ With white phosphorous is

A metal has afcc lattice. The edge length of the unit cell is $404\text{pm}$. The density of the metal is $2.72{\text{g cm}}^{-3}$.

The molar mass of the metal is ($N_A$ Avogadro's constant = $6.02\times {10}^{23}{\text{mol}}^{-1}$)

BOD refers to

Identify the order of the reaction from the following rate constants respectively

a. $k=7.06\times {10}^{-3}{\text{mol}}^{-1}{\text{L s}}^{-1}$

b. $k=5.60\times {10}^{-5}{\text{s}}^{-1}$

c. $k=1.25\times {10}^{-2}{\text{mol L}}^{-1}{\text{s}}^{-1}$

d. $k=1.25\times {10}^{-2}{\text{mol}}^{-2}{\text{L}}^2{\text{s}}^{-1}$

Which of the following reagents cannot be used for the conversion of nitrobenzene to aniline?

Which of the following on treatment with 50% aq. NaOH yields the corresponding acid and alcohol?

Reaction of $C{l}_2$ with excess of $F_2$ at $573K$ will give

The calculated spin only magnetic moment of $C{u}^{+}$ ion is:

When one mole of univalent salt AB is dissolved in water at $300K$, $3.7kJ$ of heat is absorbed and $△G$ of the process is $-8.3kJ$. What is the value of $△S$ for the process?

The $\Delta G^0$ value for the reaction, $2M{g}_{\left(s\right)}+O_{2\left(g\right)}\to 2Mg{O}_{\left(s\right)}$ at ${25}^{\circ }C$ is,
(Given $\Delta S_{sys}^0)=-217J{K}^{-1}mo{l}^{-1},\Delta S_{surr}^0=4kJ{K}^{-1}mo{l}^{-1})$

If the solubility product $K_{sp}$ of a sparingly soluble salt $M{X}_2$ at ${25}^{\circ }C$ is

$1.0\times {10}^{-11}$, the solubility of the salt in mole/litre at this temperature will

be

When nitration of aniline occurs, ortho, meta and para nitro aniline is formed. Arrange them in the increasing order of their $\%$ yield.

The correct order of acid strength for the following carboxylic acids is:

Which of the following oxides is the most acidic?

Determine the percentage of water of crystallization in a sample of green vitriol.

When ethyl chloride and alcoholic KOH are heated, the compound obtained is