List of practice Questions

The variation of the rate of an enzyme catalyzed reaction with substrate concentration is correctly represented by graph

For hydrogen atom, $\lambda_1$ and $\lambda_2$ are the wavelengths corresponding to the transitions 1 and 2 respectively as shown in figure The ratio of $\lambda_1$ and $\lambda_2$ is $\frac{x}{32}$ The value of $x$ is

Find out the oxidation number of the central metal atom of fe(CO)5 , VO2+, and WO3. Then calculate the sum of their oxidation state.

The number of seven-digit positive integers formed using the digits 1, 2, 3, and 4 only, and whose sum of the digits is 12, is         

The number of incorrect statements from the following is _____
A. The electrical work that a reaction can perform at constant pressure and temperature is equal to the reaction Gibbs energy.
B. E°cell is dependent on the pressure.
C. dEθ cell/dT = ΔrSθ/nF
D. A cell is operating reversibly if the cell potential is exactly balanced by an opposing source of potential difference.

100 balls each of mass $m$ moving with speed $v$ simultaneously strike a wall normally and reflected back with same speed, in time $t s$ The total force exerted by the balls on the wall is

Let ω = z\(\bar{z}\) + k1z + k2iz + λ(1+i), k1 , k2 ∈ \(\mathbb{R}\). Let Re(ω) = 0 be the circle C of radius 1 in the first quadrant touching the line y =1 and the y-axis. If the curve Im (ω) = 0 intersects C at A and B, then 30 (AB)2 is equal to _____
For complete combustion of ethene,
\(C_2H_4(g) + 3O_2(g) \longrightarrow 2CO_2(g) + 2H_2O (l)\)
the amount of heat produced as measured in bomb calorimeter is 1406 kJ mol-1 at 300K. The minimum value of \(T\Delta S\) needed to reach equilibrium is (-) _____ . kJ.(Nearest integer)
Given: R = 8.3 J K-1 mol-1
Given below are two statements:
Statement I: In redox titration, the indicators used are sensitive to change in pH of the solution.
Statement II: In acid-base titration, the indicators used are sensitive to change in oxidation potential.
In the light of the above statements, choose the most appropriate answer from the options given below

The drift velocity of electrons for a conductor connected in an electrical circuit is $V _{ d }$ The conductor in now replaced by another conductor with same material and same length but double the area of cross section The applied voltage remains same The new drift velocity of electrons will be

The negation of the statement \(((A\land(B\lor C)) ⇒ (A\lor B)) ⇒ A\) is
Match List l with List ll.
List I Natural amino acid List II One letter code
(I) Glutamic acid (a) Q
(II) Glutamine (b) W
(III) Tyrosine (c) E
(IV) Tryptophan (d) Y
Choose the correct answer from the options given below:
Let O be the origin and the position vector of the point P be \(\hat i-2\hat j+3\hat k\). If the position vectors of the points A, B and C are \(-2\hat i+\hat j-3\hat k,2\hat i+4\hat j-2\hat k\) and \(-4\hat i+2\hat j-\hat k\) respectively then the projection of the vector \(\overrightarrow{OP}\) on a vector perpendicular to the vectors \(\overrightarrow{ AB}\) and \(\overrightarrow {AC}\) is

 For \(x \in \mathbb{R}\), two real‐valued functions \(f(x)\) and \(g(x)\) are such that

At constant temperature, a gas is at a pressure of 940.3 mm Hg. The pressure at which its volume decreases by 40% is mm Hg. (Nearest integer)
The descending order of acidity for the following carboxylic acid is-
A. CH3COOH
B. F3C-COOH
C. CICH2-COOH
D. FCH2-COOH
E. BrCH2-COOH
Choose the correct answer from the options given below:
A coin is biased so that the head is 3 times as likely to occur as tail. This coin is tossed until a head or three tails occur. If X denotes the number of tosses of the coin, then the mean of X is
The correct order of reactivity of following haloarenes towards nucleophilic substitution with aqueous NaOH is 
order of reactivity of following haloarenes
Choose the correct answer from the options given below:
The distance of the point ( -1,2,3) from the plane \(\overrightarrow{r}( \^i−2 \^j+3 \^k )=10\) parallel to the line of the shortest distance between the lines \(\overrightarrow{r}=(\^i=\^j)+λ(2\^i+\^k)\) and  \(\overrightarrow{r}=(2\^i=\^j)+μ(\^i+\^j+\^k)\)  is 
The correct IUPAC nomenclature for the following compound is.
2 Methyl 5 oxohexanoic acid
The number of bent-shaped molecule(s) from the following is_______? 
SO2, O3, I3-, N3-
Let PQ be a focal chord of the parabola y2 = 36x of length 100, making an acute angle with the positive x-axis. Let the ordinate of P be positive and M be the point on the line segment PQ such that PM:MQ = 3:1. Then which of the following points does \(\underline{NOT}\) lie on the line passing through M and perpendicular to the line PQ? 
The Sum of number of lone pairs in central atom in IF5 and IF7 is:
The maximum value of the monetary policy multiplier is _____(where b implies sensitivity of planned investment spending to interest rate, c implies marginal propensity to consume and t = marginal tax rate, k implies sensitivity of money demand to interest rate).
Let the tangent and normal at the point \((3\sqrt{3},1)\) on the ellipse \(\frac{ x^2}{36}+\frac{y^2}{4} =1\) meet the y-axis at the points A and B respectively. Let the circle C be drawn taking AB as a diameter and the line x = \(2\sqrt{5}\) intersect C at the points P and Q. If the tangents at the points P and Q on the circle intersect at the point (α,β) , then α2 - β2 is equal to