General Science - Online Test
Q1. To find the sum of vectors A and B, we place vector B
Answer : Option A
Explaination / Solution:
Triangle law of vector addition states that when two vectors are represented by two sides of a triangle in magnitude and direction taken in same order then third side of that triangle represents in magnitude and direction the resultant of the vectors.
Taken in same order mean tail of Vector B must coincide with head of vector A as shown in image.
Q2. Gelatine is often used as an ingredient in the manufacture of ice cream for
Answer : Option B
Explaination / Solution:
Gelatin is used as ingredient in manufacture of ice cream.
Q3. ____ has followed the classical development pattern of gradual shift from agriculture to manufacturing and then to services
Answer : Option C
Explaination / Solution:
Although the central administration coordinated the economy and redistributed resources among regions when necessary, in practice most economic activity was very decentralized, and there was relatively little flow of goods and services between areas. About 75 percent of the grain grown in China, for instance, was consumed by the families that produced it.
Q4. Charge is quantized means
Answer : Option B
Explaination / Solution:
Total charge transferred from one body to other can be calculated by the number of electrons it is known as quantisation of charge given by q=±ne, where n= number of electrons , which should be an integer.
Q5.
If a wire has an initial length L and becomes L + on application of force, the longitudinal strain is given by
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. Plasmid is a
Answer : Option D
Explaination / Solution:
Plasmid is a small DNA molecule within a cell that is physically separated from a chromosomal DNA and can replicate independently. Plasmid is most commonly found in bacteria as small circular, double stranded DNA molecule.
Q7. Adult human kidney is metanephric. So, first embryonic tubules formed in vertebrates during embryonic development are :
Answer : Option C
Explaination / Solution:
adult human kidney is metanephric, the third and final excretory organ that develops in a vertebrate embryo. First embryonic tubules formed in vertebrates during embryonic development are pronephric.
Q8. Internal energy of a system
Answer : Option D
Explaination / Solution:
In thermodynamics, the internal energy of a system is the energy contained within the system. It is the energy in a system arising from the relative positions and interactions of its parts.
Q9. A scientific theory
Answer : Option D
Explaination / Solution:
A scientific theory is not the end result of the scientific method; theories can be proven or rejected, just like hypotheses. Theories can be improved or modified as more information is gathered so that the accuracy of the prediction becomes greater over time.
Q10. The first photo-autotroph organisms were
Answer : Option C
Explaination / Solution:
The first photo-autotroph organisms were bacteria. They are still present on earth in different form ranging from chemoautotrophs, autotrophs and heterotrophs.
