General Science - Online Test
Q1. A metallic solid sphere is placed in a uniform electric field. In the figure, which path will the lines of force follow?
Answer : Option D
Explaination / Solution:
The electric field is always perpendicular to the surface of a conductor. On the surface of a metallic solid sphere, the electrical field is oriented normally (i.e. directed towards the centre of the sphere).so 4th line is correct.
Q2. A hydraulic press contains 0.25 (250 L) of oil. Find the decrease in the volume of the oil when it is subjected to a pressure increase = 1.6 Pa(about 160 atm or 2300 psi). The bulk modulus of the oil is B = 5.0 Pa
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. Rop genes in pBR322 codes for
Answer : Option A
Explaination / Solution:
The plasmid pBR322 contains a Rop gene coding for the Rop protein, which promotes conversion of the unstable RNA I – RNA II complex to a stable complex.
Rop genes in pBR322 codes for protein involved in replication of plasmid. Plasmid are able to take the foreign gene and to be transferred to target cells.
Q4.
Read the following :
i. Infants and toddlers are often under habit of bed wetting since micturition is a reflex process.
ii. Adults and grown up children can control this reflex process, voluntarily to some extent.
Answer : Option C
Explaination / Solution:
The process of release of urine is called micturition and the neural mechanism causing it is called the micturition reflex. Adults and grown up children can control the reflex process of micturition voluntarily to some extent.
Q5. Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. What is the change in the temperature of the gas?
Answer : Option C
Explaination / Solution:
Temperature remains constant because system is thermally insulated. so that change in temperature will be zero.
Q6. The diagram represents Miller experiment. Choose the correct combination of labeling.
Answer : Option D
Explaination / Solution:
In Urey and Miller experiment the set up labeled as A – electrodes, B – (NH3 + H2 + H2O + CH4), C – cold water, D – Vacuum, E – U Trap.
Q7. What will be the pressure of the gaseous mixture when 0.5 L of at 0.8 bar and 2.0 L of dioxygen at 0.7 bar are introduced in a 1L vessel at?
Answer : Option C
Explaination / Solution:
x1=0.8x0.5 x 1=0.7x2 And P=+
Q8. The sugar constituent of DNA is.
Answer : Option A
Explaination / Solution:
Sugar constituent of DNA is D-2-deoxy ribose.
Q9. Full-cost pricin of gasoline refers to taxing gasoline by the gallon, as it is purchased, to cover the estimated harmful costs of driving. This tax as been extimated to be:
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. and are the respective ionisation constants for the following reactions.
The correct relationship between and is
The correct relationship between and is
Answer : Option B
Explaination / Solution:
Equation (3) =(1) + (2) So = ×
