List of practice Questions

Identify the false statement

The complex $[CoF_{6}]^{4-}$ is

A Carnot cycle has the reversible processes in the following order

$IUPAC$ name of the complex $K_{3}\left[A l\left(C_{2} O_{4}\right)_{3}\right]$ is

Dual behaviour of matter was proposed by

A cord is used to lower vertically a block of mass $M$ by a distance $d$ with constant downward acceleration $\frac{g}{4}$. Work done by the cord on the block is

Which one of the following forms propanenitrile as the major product?

The general solution of $1+\operatorname{Sin}^{2} x=3 \operatorname{Sin} x \cdot \operatorname{Cos} x, \operatorname{Tan} x \neq \frac{1}{2}$ is ......

A space vector makes the angles $150^\circ$ and $60^\circ$ with the positive direction of $X -$ and $Y-$axis. The angle made by the vector with the positive direction of $Z-$axis is .............

A battery of emf 2.1 V and internal resistance is shunted for 5 s by a wire of constant resistance 0.02 $ \Omega $ ,mass 1 g and specific heat 0.1 cal/g/?C. The rise in the temperature of the wire is

A torque of $10^{-5}$ Nm is required to hold a magnet at $90^\circ$ with the horizontal component of the earth's magnetic field. The torque required to hold it at $30^\circ$ will be

Zeolite used to soften hardness of water is, hydrated

A person suffering from a disease caused by Plasmodium, experiences recurring chills and fever at the time when

The derivative of $e^{ax} \cos\,bx$ with respect to $x$ is $re^{ax}$ $\cos\, (bx-Tan^{-1} \frac {b}{a})$ When $a >0, b > 0$,the value of $r$ is ............

The $n^{th}$ term of the series $1+3 + 7 + 13 + 21 + $ is $9901$. The value of $n$ is ................

Which one of the following statements about certain given animals is correct?

Faster distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the :

Give below is the diagram of a bacteriophage. In which one of the options all the four parts $A, B, C$ and $D$ are correct?

If $m$ is the slope of one of the lines represented by $ax^2 + 2hxy + by^2 = 0,$ then $(h + bm)^2$ = ______

A wire of length $20\,cm$ is bent in the form of a sector of a circle. The maximum area that can be enclosed by the wire is ____

The sum of all two digit natural numbers which leave a remainder $5$ when they are divided by $7$ is equal to

Volume of a gas at NTP is $ 1.12\times {{10}^{-7}}c{{m}^{3}} $ . The number of molecules in it is

The line joining $A (2, -7)$ and $B(6, 5)$ is divided into $4$ equal parts by the points $ P,Q$ and $R$ such that $AQ = RP = QB$. The midpoint of $ PR$ is _______

The number $(49^2 -4) (49^2 -49)$ is divisible by ..................

The constant term of the polynomial $\begin{vmatrix} {x+3}&{x} &{x+2}\\ {x}&{x+1}& {x-1} \\ {x+2}&{2x}&{3x+1}\\ \end{vmatrix} $ is ________