General Science - Online Test
Q1. Cloning is not meant for
Answer : Option C
Explaination / Solution:
Cloning is the method of increasing the number of individual having similar genetic organization. It is not a means of reproduction or production of the organism.
Q2. When iron filings are sprinkled on a sheet of glass placed over a short bar magnet then,
Answer : Option D
Explaination / Solution:
North pole act as positive end and South pole act as negative end. The iron fillings in the presence of magnetic field gets magnetized and form a tiny magnet which then gets attracted to the poles of bar magnet. North pole of bar magnet attracts south pole of tiny magnet and vice-versa. So all the iron fillings are arranged as the magnetic field lines of bar magnet.
Q3. Electrolytic cell is a device for using electrical energy to carry
Answer : Option C
Explaination / Solution:
Electrolytic cell converts non spontaneous chemical reaction to electrical energy using electricity.
Q4. Biological diversity level that doesn’t exist is:
Answer : Option C
Explaination / Solution:
Biological diversity level is classified as alpha, beta and gamma. Delta is not a biological diversity level.
The terms alpha, beta, and gamma diversity were all introduced by R. H. Whittaker to describe the spatial component of biodiversity. Imagine that you have a landscape containing of a number of separate sites and habitats. Alpha diversity is just the diversity of each site (local species pool). Beta diversity represents the differences in species composition among sites. Gamma diversity is the diversity of the entire landscape (regional species pool).
Q5. According to Kepler’s Law of periods, The _______________ of the time period of revolution of a planet is proportional to the cube of the ___________ of the ellipse traced out by the planet
Answer : Option B
Explaination / Solution:
Kepler's 3rd Law: T2 = a3. Kepler's 3rd law is a mathematical formula. It means that if you know the period of a planet's orbit (T = how long it takes the planet to go around the Sun), then you can determine that planet's distance from the Sun (a is the length of the semimajor axis of the planet's orbit)
Q6. In the case of semiconductors the valence and conduction bands have
Answer : Option C
Explaination / Solution:
The materials can be classified by the energy gap between their valence band and the conduction band. The valence band is the band consisting of the valence electron, and the conduction band remains empty. Conduction takes place when an electron jumps from valence band to conduction band and the gap between these two bands is forbidden energy gap. Wider the gap between the valence and conduction bands, higher the energy it requires for shifting an electron from valence band to the conduction band.
- In the case of conductors, this energy gap is absent or in other words conduction band, and valence band overlaps each other. Thus, electron requires minimum energy to jump from valence band. The typical examples of conductors are Silver, Copper, and Aluminium.
- In insulators, this gap is vast. Therefore, it requires a significant amount of energy to shift an electron from valence to conduction band. Thus, insulators are poor conductors of electricity. Mica and Ceramic are the well-known examples of insulation material.
- Semiconductors, on the other hand, have an energy gap which is in between that of conductors and insulators. This gap is typically more or less 1 eV, and thus, one electron requires energy more than conductors but less than insulators for shifting valence band to conduction band.
Q7. A rational consumer is a person who?
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. In Coelenterates, the cell shows
Answer : Option D
Explaination / Solution:
In coelenterates, the arrangement of cells is more complex. Here, the cells performing the same function are arranged into tissues, hence is called tissue level of organisation.
Q9. The functions of money is that it is a
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. Stable outer octet of electrons is achieved in chlorine atom during the formation of NaCl by:
Answer : Option D
Explaination / Solution:
Na lose its one electron forming Na+ while Cl gains the electron formimg Cl-
