General Science - Online Test
Q1. Ovulation occurs on the ------ day of menstrual cycle.
Answer : Option D
Explaination / Solution:
The release of ovum from ovary during menstrual cycle is is called ovulation. Ovulation occurs in the middle of menstrual cycle that is on 14-16th day of start of menstrual cycle.
Q2. Diborane is produced on an industrial scale by the reaction of BF3 with
Answer : Option D
Explaination / Solution:
Reaction of BF3 with NaH produces B2H6 At 450K following reaction happens
2BF3 + 6NaH --> B2H6 + 6NaF
Q3. Following are the non economic activities except
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. A charge Q is placed at the mouth of a conical flask. The flux of the electric field through the flask is
Answer : Option A
Explaination / Solution:
If the charge enclosed by conical flask than the flux is
But the charge is placed at the mouth of flask so if we draw another imaginary flask over it the charge is surrounded by two flasks now so the charge through the flask now half of the previous value (shared by two flask) So
Q5. Which of the following factors influence the Hardy-Weinberg equilibrium?
i. Gene migration
ii. Genetic drift
iii. Mutation
iv. Reproduction
v. Genetic recombination
i. Gene migration
ii. Genetic drift
iii. Mutation
iv. Reproduction
v. Genetic recombination
Answer : Option B
Explaination / Solution:
The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.
These influences include mutation, selection, genetic drift, gene migration, gene flow, genetic recombination and meiotic drive.
Q6. The method in which male partner withdraw penis from vagina just before the ejaculation is called
Answer : Option D
Explaination / Solution:
The method in which male partner withdraws penis from vagina just before the ejaculation is called coitus interrupts. The meeting of ovum and sperm is avoided as sperms are not released.
Q7. The dielectric constant K of an insulator can be
Answer : Option D
Explaination / Solution:
Dielectric constant of air is 1. All dielectrics generally have a value of the dielectric constant greater than1.where Fm is the force between two charged particles in a medium of dielectric constant K and F is the force between the two charges when placed in air.The force between two charges is greatest in air or vacuum and it decreases when any medium is placed between the charges. K cannot have negative, fractional or zero values.
Q8. Which one of the following techniques made it possible to genetically engineer living organisms?
Answer : Option B
Explaination / Solution:
Recombinant DNA technology, joining together of DNA molecules from two different species that are inserted into a host organism to produce new genetic combinations that are of value to science, medicine, agriculture, and industry.
This technique made it possible to genetically engineer the genome of living organisms.
It involves a number of procedures like identification, separation, cloning and introducing into suitable vector.
Q9. In human beings, fertilization of egg takes place in
Answer : Option D
Explaination / Solution:
Fertilisation of egg in human female takes place in oviduct or fallopian tube at the junction of ampullar-isthamus. Fertilized egg travels towards the uterus after that.
Q10.
The angular shape of ozone molecules () consists of
Answer : Option B
Explaination / Solution:
consists of 2 sigma bond and 1 pie bond.
