General Science - Online Test
Q1. Structural changes is
Answer : Option D
Explaination / Solution:
A structural change is an economic condition that occurs when an industry or market changes how it functions or operates.
Q2. Cell growth results in disturbing the ratio between
Answer : Option B
Explaination / Solution:
Cell growth results in disturbing the ratio between the nucleus and the cytoplasm. It therefore becomes essential for the cell to divide to restore the nucleo-cytoplasmic ratio. Cell becomes stable when N/C ratio is 1.
Q3. The number of phases in colloidal system are
Answer : Option A
Explaination / Solution:
Dispersed phase, dispersion medium
Q4. Gravitational force is the smallest between
Answer : Option B
Explaination / Solution:
Gravitational force is given by Since the masses are small in case of two pens and / so the gravitational force is very small.
Q5. PCR was discovered by
Answer : Option D
Explaination / Solution:
Polymerase chain reaction (PCR) was discovered by Kary Mullis. PCR technique is used to amplify the DNA segments to obtain large number of identical copies.
Q6. A rigid bar of mass 15 kg is supported symmetrically by three wires each 2.0 m long. Those at each end are of copper and the middle one is of iron. Determine the ratios of their diameters if each is to have the same tension.
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. A gas expands from I to F along three possible paths, as indicated in Figure. Calculate the work in joules done by the gas along the paths IAF, IF, and IBF
Answer : Option A
Explaination / Solution:
Work done by gas = area under P-V curve
Q8. Which of the following examples of variation is not important from an evolutionary standpoint?
Answer : Option D
Explaination / Solution:
Biological evolution refers to the cumulative changes that occur in a population over time. Non-genetic changes that occur during an organism's life span, such as increases in muscle mass due to exercise and diet,differences due to health, age or accident that have no affect on an individual's ability to survive and reproduce cannot be passed on to the next generation and are not examples of evolution.
Q9. Which of the following property of water can be used to explain the spherical shape of rain droplets?
Answer : Option C
Explaination / Solution:
surface Tension is used.
Q10. Protein is.
Answer : Option D
Explaination / Solution:
Protein is condensation polymer.
