JEE MAIN 2022 ONLINE 27TH JUNE MORNING SHIFT
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Which of the following is structure of a separating funnel?
An observer moves towards a stationary source of sound with a velocity equal to one-fifth of the velocity of sound. The percentage change in the frequency will be :
The lengths of the sides of a triangle are 10 + x2, 10 + x2 and 20 \(-\) 2x2. If for x = k, the area of the triangle is maximum, then 3k2 is equal to :
Match List-I with List-II
| List - I | List - II | ||
|---|---|---|---|
| (A) | Lyophilic colloid | (I) | Liquid-liquid colloid |
| (B) | Emulsion | (II) | Protective colloid |
| (C) | Positively charged colloid | (III) | FeCl\(_3\) + NaOH |
| (D) | Negatively charged colloid | (IV) | FeCl\(_3\) + hot water |
Choose the correct answer from the options given below :
In a carnot engine, the temperature of reservoir is 527\(^\circ\)C and that of sink is 200 K. If the work done by the engine when it transfers heat from reservoir to sink is 12000 kJ, the quantity of heat absorbed by the engine from reservoir is ______________ \(\times\) 106 J.
Let \({{dy} \over {dx}} = {{ax - by + a} \over {bx + cy + a}}\), where a, b, c are constants, represent a circle passing through the point (2, 5). Then the shortest distance of the point (11, 6) from this circle is :



