General Science - Online Test
Q1. When r = 1, there is perfect
Answer : Option C
Explaination / Solution:
As 1 shows perfect relation between two variables and the + sign shows positive relation
Q2. Per capita per annum income of the ___ is 41,890 dollar that of ____ is 35,485 dollar and ___ 49,351 dollar
Answer : Option B
Explaination / Solution:
Per capita GDP is a measure of the total output of a country that takes gross domestic product (GDP) and divides it by the number of people in the country. The per capita GDP is especially useful when comparing one country to another, because it shows the relative performance of the countries. A rise in per capita GDP signals growth in the economy and tends to reflect an increase in productivity.
Q3. The process of fusion between one large and non-motile female gamete with smaller, motile male gamete is termed as
Answer : Option D
Explaination / Solution:
Fusion between one large, non-motile female gamete and a smaller, motile male gamete is termed as oogamous e.g., Volvox, Fucus.
Q4. The photograph or diagram of metaphasic chromosome arranged in homologous pair according to their length and thickness, position of centromere is called
Answer : Option D
Explaination / Solution:
Idiogram is a diagrammatic or systematized representation of the chromosome complement of an individual, species, or other group of organisms, indicating the number of chromosomes and their lengths, arm length ratio, centromere position, banding pattern.
Q5. Sample method, compared to Census method, is much better because
Answer : Option D
Explaination / Solution:
Because a part of the population is surveyed, it take less time.
Q6.
The atmospheric concentrations of carbon dioxide and CH4 have increased by ____ per cent and ____ per cent respectively above pre-industrial levels since 1750.
Answer : Option B
Explaination / Solution:
The National Oceanic and Atmospheric Administration released its annual index of 20 key greenhouse gases. It shows, The atmospheric concentrations of carbon doxide and CH4 have increased by 40 per cent and 140 per cent respectively above pre-industrial levels since 1750.
Q7. In a DNA strand the nucleotides are held together by:
Answer : Option B
Explaination / Solution:
When nucleotides are incorporated into DNA, adjacent nucleotides are linked by a phosphodiester bond: a covalent bond is formed between the 5' phosphate group of one nucleotide and the 3'-OH group of another.
In this manner, each strand of DNA has a “backbone” of phosphate-sugar-phosphate-sugar-phosphate
Q8. An ammeter together with an unknown resistance in series is connected across two identical batteries each of emf 1.5 V. When the batteries are connected in series, the galvanometer records a current of 1A and when the batteries are in parallel, the current is 0.6A. Then the internal resistance of the battery is
Answer : Option B
Explaination / Solution:
When the batteries are in series, the internal resistances are in series. Both e m f and the internal resistances add up.
from equation (i) and (ii)
Q9. The total mechanical energy of a harmonic oscillator
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. Functional and dynamic unit of nature where living and non-living components interact with each-other is
Answer : Option C
Explaination / Solution:
An ecosystem is a dynamic complex of plant, animal and micro-organism communities and the abiotic environment interacting as a functional unit. Ecosystems are not static but dynamic and discontinuous systems with interactions and connections which continually evolve both spatially and temporally. They represent ecological processes and the resources they provide can be expressed in terms of goods and services.
