General Science - Online Test
Q1. The hybridization of probes having radioactive isotopes with various sequence of nitrogen bases with ssVNTR is called
Answer : Option C
Explaination / Solution:
A Southern blot is a method used in molecular biology for detection of a specific DNA sequence in DNA samples. Southern blotting combines transfer of electrophoresis-separated DNA fragments to a filter membrane and subsequent fragment detection by probe hybridization.
Q2. Statement I: During growth of embryo limbs and external genital organ is formed by the ends of 12 weeks.
Statement II: The sex of the developing embryo can be determined using ultrosonography after 3 months of pregnancy.
Statement II: The sex of the developing embryo can be determined using ultrosonography after 3 months of pregnancy.
Answer : Option D
Explaination / Solution:
During growth of embryo limbs and external genital organs is formed by the ends of 12 weeks (3 months). Ultrosonography can be used to know the sex of foetus after this period as genital organs are formed.
Q3. Which of the following is false regarding Importance of Statistics in Economics
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. Common origin of man and chimpanzee is best shown by
Answer : Option D
Explaination / Solution:
Common origin of man and chimpanzee is best shown by chromosomes. Both human beings and chimpanzee shows similar kinds of chromosome in terms of number and size.
Q5. Among the following which is the strongest oxidizing agent?
Answer : Option B
Explaination / Solution:
F2 is most electronegative element hence it readily get reduced to F- ion so it is very strong oxidizing agent.
Q6.
Assertion: VNTR of two persons may be similar at certain sites but could be different at other sites.
Reason: A child inherits 50% of chromosomes from mother and remaining 50% from father.
Answer : Option C
Explaination / Solution:
VNTR of two persons may be similar at certain sites but could be different at other sites because a child inherits 50% of chromosomes from mother and remaining 50% from father. VNTR genes also undergoes different kinds of mutations.
Q7. Assertion: Just after implantation, embryo (inner cell mass) differentiates into ectoderm, mesoderm and endoderm.
Reason: These three layers give rise to all tissues and organs in adult human beings.
Answer : Option A
Explaination / Solution:
After implantation, embryo differentiates into outer layer called ectoderm, middle layer mesoderm and inner layer endoderm. These three layers forms the all tissues or organs of human beings.
Q8. Economics is the study of how ___ and _____ chose to employ scare resources that could have alternative uses in order to produce various commodities that satisfy their wants
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. The brown ring test for nitrates depends on
Answer : Option C
Explaination / Solution:
in ring test of nitrates nitrate ion is reduced to nitric oxide.
Q10. During replication of DNA, Okazaki fragments are formed in the direction of :
Answer : Option B
Explaination / Solution:
During replication of double helix DNA, one strands having 3’ to 5’ polarity it is continuous and on other strand it is in small fraction called Okazaki fragments. The polarity of this strand is 5’ to 3’.
