List of practice Questions

E^∘ for the cell, Zn|Zn²+(aq)||Cu²+(aq)|Cu is 1.10V at 25^∘C. The equilibrium constant of the reaction Zn + Cu²+(aq) rightleftharpoons Cu + Zn²+(aq) is of the order of

For the reaction CO(g) + (1)/(2)textO₂(textg) → textCO₂(textg), which one of the statements is correct at constant T and P?
Specific conductance of 0.1M HA is 3.75 × 10⁻4Ω⁻1cm⁻1. If Lambdam^∘(HA) = 250Ω^-1cm²mol⁻1, the dissociation constant Kₐ of HA is
The marks obtained by 60 students in a certain test are given below:
Marks: 10–20, 20–30, 30–40, 40–50, 50–60, 60–70, 70–80, 80–90, 90–100
No. of students: 2, 3, 4, 5, 6, 12, 14, 10, 4
Median of the above data is
A random variable X has the probability distribution
X: 1, 2, 3, 4, 5, 6, 7, 8
P(X): 0.15, 0.23, 0.12, 0.10, 0.20, 0.08, 0.07, 0.05
For the events E = X is a prime and F = X < 4, find P(E ∪ F).
The function f(x)=x-|x-x²|,-1≤ x\le1 is
Let A,B,C be finite sets. Suppose that n(A)=10, n(B)=15, n(C)=20, n(A∩ B)=8 and n(B∩ C)=6. Then the possible value of n(A∪ B∪ C) is

In the following structures, which two forms are staggered conformations of ethane? 

The correct statement about the compounds A, B and C shown is 

The teacher as well as his students, (a) all left (b) for the trip. (c) No error. (d)

Which answer figure completes the form in the question figure? 



In the following question, which answer figure will complete the question figure? 





 

Which answer figure includes all the components given in the question figure?



Which of the answer figures includes the separate components found in the question figure? 



Select a suitable figure from the four alternatives that would complete the figure matrix. 




Select a suitable figure from the four alternatives that would complete the figure matrix.



Statement: The human organism grows and develops through stimulation and action. Conclusions: I. Inert human organism cannot grow and develop. II. Human organisms do not react to stimulation and action.

Choose the set of figure which follows the given rule. Rule: Closed figures gradually become open and open figures gradually become closed. 

An urn contains five balls. Two balls are drawn and found to be white. The probability that all the balls are white is
The value of int₀^π/2frac√(sin x)√(sin x)+√(cos x)dx is
The dot product of a vector with the vectors i+ j-3 k, i+3 j-2 k, 2 i+ j+4 k are 0,5 and 8 respectively. The vector is
The angle between the lines whose intercepts on the axes are (a,-b) and (b,-a) respectively, is
If the line through the points A(k,1,-1) and B(2k,0,2) is perpendicular to the line through the points B and C(2+2k,k,1), then the value of k is
If R(t)= beginpmatrix cos t & sin t
-sin t & cos t endpmatrix, then R(s)R(t) equals
If int xlog(1+(1)/(x))dx = f(x)log(x+1)+g(x)x²+Lx+C, then