List of practice Questions

(i) The reaction in which an amide is converted into a primary amine by the action of Br2 and alcoholic NaOH is known as ________.

(ii) How is a primary amine distinguished from a secondary amine using the Hinsberg test?

(i) Differentiate between globular and fibrous proteins. 
(ii) What is meant by denaturation of protein?

(i) State Henry’s Law. Give two applications of it. 
(ii) Draw the vapour pressure-mole fraction curve for a non-ideal solution having positive deviation, if A and B are the two volatile components.

(i) Write the cell reaction and Nernst equation for a Daniel cell. 
(ii) Explain the variation of conductivity and molar conductivity of a solution with dilution.

(i) Write two postulates of Werner's coordination theory. 
(ii) Draw the geometrical isomers of [(NH_3)_3(NO_2)_3] and give their structures.

(i) Predict the products A and B in the hydroboration-oxidation reaction. 
(ii) Explain the preparation of phenol from cumene.

(i) In the presence of light, chloroform is slowly oxidised by air to an extremely poisonous gas called ________.
(ii) How is chlorobenzene converted into 1-chloro-2-methyl benzene?
(i) Define activation energy.
(ii) Explain the effect of catalyst on the rate of chemical reaction.

The strain-stress plot for materials A, B, C and D is shown in the figure. Which material has the largest Young's modulus? 

A hemispherical bowl is made of steel of thickness 1 cm. The outer radius of the bowl is 6 cm. The volume of steel used (in \( \text{cm}^3 \)) is :
The internal and external radii of a hollow hemisphere are \(5\sqrt{2} \text{ cm}\) and \(10 \text{ cm}\) respectively. A cone of height \(5\sqrt{7} \text{ cm}\) and radius \(5\sqrt{2} \text{ cm}\) is surmounted on the hemisphere as shown in the figure. Find the total surface area of the object in terms of \(\pi\). (Use \(\sqrt{2} = 1.4\))
Three charges $+2q$, $+3q$ and $-4q$ are situated at $(0,-3a)$, $(2a,0)$ and $(-2a,0)$ respectively in the $x$-$y$ plane. The resultant dipole moment about origin is ___.
A stone is tied to a string and displaced from A to B by application of a constant force F in three different ways as shown in the diagram below. Arrange the three cases in ascending order of the work done by the force. (Given AJB is a semi-circle, 0\(^\circ\)<\(\theta\)<90\(^\circ\) and AB = 20 m)
The correct formula to calculate the equivalent resistance of R\(_1\) and R\(_2\) when connected in parallel, is:
Find out the correct energy for the ground state or energy transition. (Symbols have usual meaning and \(n \to m\) gives the transition)

छन्द किसे कहते हैं? छन्द के मुख्य प्रकारों के नाम लिखिए।

करुण रस की परिभाषा उदाहरण सहित लिखिए।

महाकाव्य किसे कहते हैं? दो महाकाव्यों के नाम लिखिए।

अन्योक्ति अलंकार की परिभाषा उदाहरण सहित लिखिए।

‘फसल’ कविता में फसल उगाने के लिए आवश्यक तत्व कौन-कौन से हैं?

कवि निराला की आँख फागुन की सुंदरता से क्यों नहीं हट रही है?

अवधी भाषा आज किन-किन क्षेत्रों में बोली जाती है?

गोपियों के अनुसार राजा का धर्म क्या होना चाहिए?

तुलसीदास अथवा माखनलाल चतुर्वेदी की काव्यगत विशेषताएँ निम्न बिंदुओं के आधार पर लिखिए: 
(i) दो रचनाएँ 
(ii) भावपक्ष

Define AIDS, its causative agent, and methods of prevention.