List of practice Questions

Rate of cooling of a body is \(0.2^\circ \text{C/min}\) when excess temperature is \(20^\circ \text{C}\). The proportionality constant \( k \) is:
What is the angular frequency \( \omega \) of a simple harmonic oscillator with mass \( m \) and spring constant \( k \)?
What is the fundamental frequency of an open organ pipe with length \( L \) and speed of sound \( v \)?
Which of the following is NOT a layer of the urinary bladder?
Which hormone is used to increase the size of fruit?
0.16 seconds is a time interval for which event in the ECG system?
Which of the following uses plasma membrane for respiration?
.......... can't be further hydrolyzed.
What are some archaeological sites where Neanderthal remains and artifacts have been discovered?
A Thermal Cycler/Stabilizer is used for .........?
Statement 1: Avery, McLeod, and McCarty discovered the semi-conservative nature of DNA.
Statement 2: Meselson and Stahl used \( \text{E. coli} \) to demonstrate the semi-conservative nature of DNA.
How much ATP is produced by aerobic respiration?
What is the role of heme in hemoglobin?
How many heartbeats does a person have in 1 minute on average?
Which are the pioneer species in aquatic habitats?
Which part of a plant is grafted onto a stock that is rooted?
A lot of 100 bulbs contains 10 defective bulbs. Five bulbs are selected at random from the lot and are sent to the retail store. Then the probability that the store will receive at most one defective bulb is:
Find the expected value and variance of \( X \) for the following p.m.f: \[ \begin{array}{|c|c|c|c|c|c|} \hline x & -2 & -1 & 0 & 1 & 2 \\ \hline P(X) & 0.2 & 0.3 & 0.1 & 0.15 & 0.25 \\ \hline \end{array} \]
The solution of the differential equation \( x \cos y \, dy = (x e^x \log x + e^x) \, dx \) is:
Integrate the function \( \int e^x \left( \frac{1 + \sin x}{1 + \cos x} \right) dx \):
The variance of the following probability distribution is:

\[ \begin{array}{|c|c|} \hline x & P(X) \\ \hline 0 & \frac{9}{16} \\ 1 & \frac{3}{8} \\ 2 & \frac{1}{16} \\ \hline \end{array} \]
The converse of \( ((\sim p) \land q) \Rightarrow r \) is:

What is the IUPAC name of the given haloarene? 

What is the preliminary test for nanoparticles?
What is the edge length of a BCC unit cell?