List of practice Questions

Identify the method of preparation of a colloidal sol from the following:
The total internal energy of 2 moles of a monoatomic gas at a temperature 27°C is \( U \). The total internal energy of 3 moles of a diatomic gas at a temperature 127°C is:
Truth table for the given circuit is:
Truth table for the given circuit is:
An object is projected upwards from the foot of a tower. The object crosses the top of the tower twice with an interval of 8 s and the object reaches the foot after 16 s. The height of the tower is (Given \( g = 10 \, m/s^2 \))
The upper \( \left(\frac{1}{n} \right)^{\text{th}} \) part of an inclined plane is smooth, and the remaining lower part is rough with a coefficient of friction \( \mu_k \). If a body starting from rest at the top of the inclined plane will again come to rest at the bottom of the plane, then the angle of inclination of the inclined plane is:

Find incorrect statements
A. Rhodospirillum is aerobic  
B. Anabaena and Nostoc are free-living nitrogen fixers  
C. Azotobacter is anaerobic  
D. Beijerinckia is aerobic  

The number of cytosine molecules in a typical ds DNA molecule which is having 20 coils with 480 Hydrogen bonds.
Assertion (A): Lac mRNA is synthesized in the presence of inducer.
Reason (R): The activity of repressor protein is suppressed by inducer.
Identify the Algae, fungi and bacterium used as SCP in serial.
Which of the following digestive glands are found in the wall of intestine?

Malachite is a mineral of metal ‘X’. Its composition is: 
 

The time period of revolution of a satellite close to the planet’s surface is 80 minutes. The time period of another satellite which is at a height of 3 times the radius of the planet from the surface is:

Choose the correct pair from the following: 

Choose correct pairs from the following: 

Identify triangular bones among the following:
A. Vomer
B. Coccyx
C. Scapula
D. Hyoid
E. Palatine
Class-I MHC molecules are associated with:
The following statement is true in case of total internal reflection:
'x' cm\(^3\) of CH\(_4\) gas diffused through a porous membrane in 25 min, Under the same conditions 'y' cm\(^3\) of another gas of molar mass 64 g mol\(^{-1}\) diffused in 20 min. The ratio of x and y is:

Match the different shapes of the cells: 


 

Match the following list: 

Study the table and find the correct combination: 


 

Study the following and pick up the incorrect statements: 
I. In commensalism both partners are benefitted due to each other. 
II. In amensalism no partner is benefitted. 
III. In parasitism, one partner is benefitted and the other is harmed. 
IV. In competition both the partners are benefitted. 
 

It acts as only inhibitory neurotransmitter

Two charged particles of the same charge but different masses \(m_1\) and \(m_2\) are projected with the same velocity \(V\) normally into the uniform magnetic field \(B\) as shown in the figure. The maximum separation of the particles is: 

The number of Guanines and Adenines present in the DNA molecule of pitch at 170° with 130 Hydrogen bonds between base pairs: