List of practice Questions

Which of the following reagent can distinguish between $1$-Butyne and $2$-Butyne?

Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?

Which one of the following statements about the zeolites is false ?

Which carbon is more electronegative?

Ionic radii are

In semiconductors at a room temperature

In an intrinsic semiconductor:

In an equilateral triangle $A B C, F_{1}, F_{2}$ and $F_{3}$ are three forces acting along the sides $A B, B C$ and $A C$ as shown in the given figure. What should be the magnitude of $F_{3}$ so that the total torque about $O$ is zero?

In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order:

At absolute zero temperature, semiconductor behaves as a/an:

Which of the following is not a function of proteins?

Which of the following is not considered as an organometallic compound ?

Capitulum inflorescence is found in

Silent Valley is situated in

If $\displaystyle\lim_{x \to\infty} \left(1+ \frac{a}{x} + \frac{b}{x^{2}}\right)^{2x} = e^{2} $ , then the values of a and b, are

The range of the function $f\left(x\right) = ^{7-x}P_{x-3}$ is

The coefficient of the middle term in the binomial expansion in powers of x of $(1+ \alpha x)^4$ and of $ (1 - \alpha x)^6$ is the same if $\alpha$ equals

The coefficient of $x^n$ in expansion of $(1+ x)(1- x)^n$ is

A person standing on the bank of a river observes that the angle of elevation of the top of a tree on the opposite bank of the river is $60^{\circ}$ and when he retires $40$ meter away from the tree the angle of elevation becomes $30^{\circ}$. The breadth of the river is

Let $A=\begin{pmatrix} 1&-1 &1 \\[0.3em] 2 &1 &-3 \\[0.3em] 1 &1&1 \end{pmatrix}$ and $\,10\,B=\begin{pmatrix} 4&2 &2 \\[0.3em] -5 &0 & \alpha \\[0.3em] 1 &-2&3 \end{pmatrix} $. If B is the inverse of A , then $\alpha$ is

If $f: R \rightarrow S $ defined by $ f(x)=\sin x-\sqrt{3} \,\cos\,x+\,$ 1, is onto, function then S = ?

The graph of the function $y = f(x) $is symmetrical about the line $x = 2$, then

The treatment of snake bite by antivenine is an example of

Lysozymes are found in

A perfectly black body is one where