General Science - Online Test
Q1. In human genome project, which chromosome was sequenced at last?
Answer : Option B
Explaination / Solution:
Chromosome 1 is the final one to be mapped out in Human Genome Project. The chromosome carries an estimated 3,141 genes that manufacture proteins, making it one of the most gene-rich chromosomes.
Chromosome 1 is the largest human chromosome, containing about 8% of the entire genome. That's six times longer than its smallest sibling, chromosome 21. Work on this monster started a couple of years after researchers cracked into some of the other chromosomes. It was completed on may 2006.
Q2. Testosterone is secreted by
Answer : Option D
Explaination / Solution:
Testosterone hormone help in release of sperm from testis. This hormone is released by leydig cells present in between seminiferous tubules of testis.
Q3. The elements of group 14 are slightly more electronegative than group 13 elements because of
Answer : Option B
Explaination / Solution:
As we move along the period electronegativity increases due to increase in nuclear charge and decrease in size.
Q4. _____ is the systematic body of knowledge
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. Phenomenon of “Industrial melanism” demonstrates
Answer : Option C
Explaination / Solution:
The organism surviving in industrial area having polluted soil, air and water undergo changes in skin colour and other traits to adjust in given surroundings. This is a type of natural selection.
Q6. Surgical method of contraception
Answer : Option A
Explaination / Solution:
In surgical method fallopian tubes of female and vas deference of male is cut and tide to prevents insemination and ovulation.
Q7. The international rice genome sequencing project begin in
Answer : Option B
Explaination / Solution:
The International Rice Genome Sequencing Project (IRGSP) began in September 1997, at a workshop held in conjunction with the International Symposium on Plant Molecular Biology in Singapore. Scientists from many nations attended the workshop and agreed to an international collaboration to sequence the rice genome.
Q8. Menstrual cycle is repeated at an average interval of
Answer : Option C
Explaination / Solution:
In human female menstrual cycle is repeated at the interval of 28/29 days from menarche to menopause. Menstrual cycle gets stopped during pregnancy.
Q9. In general, non-metals as compared to metals have
Answer : Option D
Explaination / Solution:
Non metals have high value of ionization energy while metals have comparatively low value of ionization energy.
As we move across a period (Metal are there in left hand side and nonmetals are there in right hand side), the ionization energy of an element increases. This is because the effective nuclear charge increases.
Q10. Whether the statistics are collected for the purpose of knowing their economic position or distribution of land among them or their total population or for any other purpose all these objectives are
Answer : Option A
Explaination / Solution:
No Explaination.
