List of practice Questions

The area of triangle with vertices ${(K, 0),(4,0) , (0, 2)}$ is $4$ square units, then value of $K$ is
The integrating factor of the differential equation $x . \frac{dy}{x} + 2y = x^2 $ is $(x \neq 0)$
Capacitation occurs in
DNA fragments are :
The perpendicular distance of the point ${P(6,7,8)}$ from $XY$-plane is
A physical quantity of the dimensions of length that can be formed out of c, G and $\frac{e^2}{4 \pi \varepsilon_0} $ is [c is velocity of light, G is universal constant of gravitation and e is charge] :-
A carnot engine having an efficiency of $\frac{1}{10} $ as heat engine, is used as a refrigerator. If the work done on the system is $10\,J$, the amount of energy absorbed from the reservoir at lower temperature is :
Which of the following is a sink for $CO$ ?
A resistance of $ 5 \Omega $ is connected in series with a capacitance of $ 1\,mF $ . The combination is connected to $ AC $ source of angular frequency $ 200 \, rad\, s ^{-1} $ . Then
$ Cu $ crystallizes as face centred cubic lattice with edge length of $ 3.56 \, ? $ . What will be the nearest distance between $ Cu $ atoms?
What is the probable free amino acid product formed when $ R^1CH(NH_2)CONHCHR^2COOH $ reacts with $ 1 $ -fluoro- $ 2,4 $ -dinitrobenzene in presence of $ NaHCO_3 $ followed by acid hydrolysis?
A body $ A $ thrown vertical upwards with a velocity v reaches a height of $ 200\, m $ . Another body $ B $ whose mass is twice that of $ A $ is thrown with a velocity $ 2v $ . Find the maximum height reached by $ B $ .
The monomers used in preparation of dextron are
A molecule of Stachyose contains how many carbon atoms ?
Which of following coordinate complexes is an exception to $EAN$ rule ? (Given At. No. Pt = 78, Fe = 26, Zn = 30, Cu = 29)
Which of the following statements is INCORRECT for pair of elements $Zr - Hf$ ?
Which of the following statements is INCORRECT in case of Hofmann bromamide degradation ?
What is the chief constituent of Pyrex glass ?
The metal extracted by leaching with a cyanide is
What is the quantity of hydrogen gas liberated when $46 \,g$ sodium reacts with excess ethanol ? (Given At. mass of Na = 23)
If coefficient of variation is $60$ and standard deviation is $24$, then Arithmetic mean is

For which combination of working temperatures, the efficiency of Carnot's engine is the least ?

Which of the following represents order of 'Horse' ?
A particle performs linear $S.H.M.$ At a particular instant, velocity of the particle is $u$ and acceleration is $\alpha$ while at another instant velocity is $v$ and acceleration is $ \beta (0 < \alpha < \beta )$. The distance between the two positions is
If $z_1$ and $z_2$ are z co-ordinates of the points of trisection of the segment joining the points $A(2, 1, 4), B _1 + z_2 =$