List of practice Questions

Which among the following elements is obtained in pure form by zone refining process?
Which alkane is secreted by cockroaches to attract the opposite gender of its species?
Which among the following vitamins belongs to the aliphatic series?
Which of the following is true for the compound AB, if it is formed by the transfer of an electron from A to B?
When a system absorbs 8 kJ of heat and does 2.2 kJ of work on surroundings, calculate the internal energy change.
Dry ice is an example of
Identify the gas used in gas chromatography.
In PCl\(_5\) molecule, the angle Cl-P-Cl present in a plane is equal to
What is the oxidation state of chlorine atom in chloric acid?
Which among the following is a globular protein?
Which of the following compounds is present in natural rubber as a monomer?
Ketoxime on reduction with sodium in ethanol forms
What is the order of reaction for decomposition of gaseous acetaldehyde?
Which among the following elements is not present in salvarsan?
What is the oxidation number of Ru in [Ru(NH\(_3\))\(_5\)H\(_2\)O]Cl\(_2\)?
Which among the following ionic species has least precipitating power?
Which polymer among the following does NOT contain ester linkage in it?
Which of the following alcohol is more acidic?
The increasing order of reactivity of alkaline earth metals with water is
Identify the catalyst used in the manufacture of high-density polythene.
P$_4$O$_{10}$ reacts with water to produce
If \( y = e^{\sin(\cosec^{-1}x)} \), then \( \dfrac{dy}{dx} \) is

Sodium crystallizes in bcc structure with radius \(186 \times 10^{-8} \,\) \(\text{cm}. \)Calculate the edge length of the unit cell? 
 

A force \( (5i - 2j + 3k) \, \text{N} \) acts on a body of mass 2 kg and displaces it from \( (3i + 2j - k) \, \text{m} \) to \( (6i - j + 4k) \, \text{m} \). The work done is
Heat of combustion of \(\text{C(s)}\), \(\text{H}_2(g)\) and \(\text{C}_2\text{H}_6(g)\) are \(-x_1\), \(-x_2\) and \(-x_3\) respectively. Hence, the heat of formation of \(\text{C}_2\text{H}_6(g)\) is