General Science - Online Test
Q1. The non-metal oxides are:
Answer : Option C
Explaination / Solution:
nonmetallic oxides are either neutral or acidic. Example CO, NO, H2O are neutral while is acidic.
Q2. Following are the drawback of statistics except
Answer : Option A
Explaination / Solution:
No Explaination.
Q3. Links between organisms that show branching pattern of evolutionary relationships are shown by
Answer : Option B
Explaination / Solution:
Phylogenetic trees shows links between organisms that show branching pattern of evolutionary relationship. In this pattern, the organism that evolves earlier is shown below and further sub branching represent newly evolved organisms.
Q4. High increase in human population is due to
Answer : Option C
Explaination / Solution:
High increase in human population is due to availability of better medical facilities to increase IMR and decrease MMR.
Q5. In human genome project, commonly used host were bacteria and yeast and their vectors are called as
Answer : Option B
Explaination / Solution:
YAC (Yeast artificial chromosome): It is a vector used to clone DNA fragments larger than 100 kb and up to 3000 kb. The major advantage of using artificial chromosomes such as YACs is that it can carry much larger DNA fragments than ordinary plasmids.
BAC (Bacterial artificial chromosome: It is an artificially constructed vector containing origin of replication & selectable marker for identification. It is capable of carrying large DNA fragments and can replicate easily inside a bacterial cell.
These vectors are used in human genome project for mapping or sequencing of genomes to be studied.
Q6. Which one is the most likely reason of not occurring regular menstrual cycle
Answer : Option A
Explaination / Solution:
Menstrual cycles get stopped during pregnancy. Sometimes it becomes irregular due to stress and other hormonal activities of the body.
Q7. The element having the noble gas plus 14 f- electrons plus 10 d-electron cores
Answer : Option A
Explaination / Solution:
Thallium has noble gas + 14 f +10 d electrons.
[Xe] 4f14 5d10 6s2 6p1 . Thus the electronic structure of thees element is more complex.
Q8. Which of the following statement is incorrect
Answer : Option C
Explaination / Solution:
No Explaination.
Q9. Which of the following is not a factor that affects Hardy-Weinberg equilibrium?
Answer : Option B
Explaination / Solution:
Hardy-Weinberg equilibrium cannot be disturbed by vegetative propagation as the all new offspring are clone of each other having same gene. Migration, genetic drift, mutation and natural selection affect the equilibrium of alleles in a population.
Q10. Inability to conceive or produce children even after two years of unprotected sexual co-habitation is called
Answer : Option C
Explaination / Solution:
The inability to conceive even after two years of unprotected sexual co-habitation is called infertility. This may be due to not functioning of male or female reproductive system properly.
