General Science - Online Test
Q1. which of the following statements about earth's magnetism is correct
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. Electrochemistry is the study of production of electricity from
Answer : Option B
Explaination / Solution:
Electrochemistry is branch of chemistry that deals with production of electricity from a chemical reaction or carrying out a non spontaneous reaction using electricity.
Q3. Which of the following statements regarding utility is not true?
Answer : Option D
Explaination / Solution:
Utility is a subjective concept and varies from person to person, at different times and at different places. There cannot be a standardised measure for utility. Therefore, the point that utility always measurable is not true.
Q4. Which of the following are found in extreme saline conditions?
Answer : Option A
Explaination / Solution:
No Explaination.
Q5. Speciation maintains biodiversity
Answer : Option C
Explaination / Solution:
Speciation, the formation of new and distinct species in the course of evolution. Speciation involves the splitting of a single evolutionary lineage into two or more genetically independent lineages.
Speciation maintains biodiversity both at species level and community level. New species develop from older species due to variation having more adaptive in changed habitat.
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Q6. Basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc are
Answer : Option A
Explaination / Solution:
Semiconductors are materials that have electrical conductivity between conductors such as most metals and nonconductors or insulators like ceramics. Semiconductor material is used in the manufacturing of electrical components and used in electronic devices such as transistors and diodes.
Semiconductors are the basic materials used in the present solid state electronic devices like diode, transistor, ICs etc
Q7. According to Kepler’s Law of orbits:
Answer : Option A
Explaination / Solution:
The orbit of a planet around the Sun (or of a satellite around a planet) is not a perfect circle. It is an ellipse—a “flattened” circle. The Sun (or the centre of the planet) occupies one focus of the ellipse. A focus is one of the two internal points that help determine the shape of an ellipse. The distance from one focus to any point on the ellipse and then back to the second focus is always the same.
Q8.
Which
one of the following is not related to vermiculture?
a.
Maintains soil fertility
b.
Breakdown of inorganic matter
c.
Gives porosity, aeration and moister holding capacity
d.
Degradation of non biodegradable solid waste
Answer : Option C
Explaination / Solution:
No Explaination.
Q9. Which
of the following statements about hydrogen is incorrect ?
Answer : Option C
Explaination / Solution:
Correct statement : Hydrogen has
three isotopes of which protium
is the most common.
Q10. Identify the input device
Answer : Option B
Explaination / Solution:
No Explaination.
