1. St Martin’s Island often appears in the news, it belongs to which country?
a) USA
b) UK
c) Bangladesh
d) Myanmar
Answer. c) Bangladesh
St Martin’s Island is located in the Bay of Bengal. It is only one Coral Island in Bangladesh, located near Myanmar.
2. Kursk region often appears in the news, it belongs to which country?
a) Lebanon
b) Turkey
c) Russia
d) Ukraine
Answer. c) Russia
Kursk region is located in Russia.
Russia recently declared a “federal-level” emergency in the Kursk region following a major Ukrainian incursion.
3. "Triclosan", considered harmful when exposed to high levels for a long time, is most likely present in which of the following? ( UPSC 2019)
a) Food preservatives
b) Fruit-ripening substances
c) Reused plastic containers
d) Toiletries
Answer. d) Toiletries
"Triclosan" is an anti-bacterial substance, used in antibacterial soaps and body washes, toothpastes, and some cosmetics.
4. Water can dissolve more substances than any other liquid because ( UPSC 2019)
a) It is dipolar in nature
b) It is a good conductor of heat
c) It has a high value of specific heat
d) It is an oxide of hydrogen
Answer. a) It is dipolar in nature.
Water molecules have a polar arrangement of oxygen and hydrogen atoms—hydrogen) has a positive electrical charge and oxygen has a negative. Water is called the “universal solvent” because it can dissolve more substances than any other liquid.
5. In the context of recent advances in human reproductive technology. “Pronuclear Transfer” is used for ( UPSC 2020)
a) Fertilisation of egg in vitro by the donor sperm
b) Genetic modification of sperm-producing cells
c) Development of stem cells into functional embryos
d) Prevention of mitochondrial diseases in offspring
Answer. d) Prevention of mitochondrial diseases in offspring.
In pronuclear transfer, the mother's egg is first fertilized with the father's sperm, producing a zygote
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