Which of the following acids are formed during the formation of curd from milk?
(A) Acetic acid
(B) Ascorbic acid
(C) Citric acid
(D) Lactic acid
As an end product, lactic acid is produced which makes the milk thicker and finally converts it into curd.
Iron is obtained by which of the following minerals?
(A) Limestone
(B) Pitch Bland
(C) Monozite sand
(D) Hematite
The iron minerals that are at present used as ores are hematite, magnetite, limonite, and siderite.
Which of the following is not a natural polymer?
(A) Wool
(B) Leather
(C) Nylon
(D) Silk
The correct answer is the Glyptal. The term "natural polymers" refers to compounds that are produced naturally. Glyptal is a synthetic polymer and does not exist in nature. The polymer substance formed from glycerol and phthalic acid is known commercially as glyptal.
The first Indian Satellite Aryabhatta was launched in
(A) 1974
(B) 1975
(C) 1976
(D) 1977
The Aryabhata spacecraft, named after the famous Indian astronomer, was India's first satellite; it was completely designed and fabricated in India and launched by a Soviet Kosmos-3M rocket from Kapustin Yar on April 19, 1975.
Which of the following metals is used in accumulator batteries?
(A) Copper
(B) Lead
(C) Aluminum
(D) Zinc
Thus, a metal used in storage batteries is Lead.
The instrument used to examine a person’s digestive tract is called_____.
(A) Oscilloscope
(B) Microscope
(C) Endoscope
(D) Radiograph
Reading of a barometer going down is an indication of
(A) rainfall
(B) snow
(C) storm
(D) intense heat
The science that deals with the relationship of various organisms with their environment is known as?
(A) anthropology
(B) economics
(C) ecology
(D) geology
Ecology is the study of the relationships between living organisms, including humans and their physical environment. The German scientist Earnst Haeckel was the first to use this word in 1869.
Which of the following has a very strong aroma of the fruit?
(A) Ethyl acetate
(B) Methanol
(C) Methyl chloride
(D) Methanoic acid
World Environmental Day is celebrated every year on:
(A) 5 May
(B) 5 June
(C) 5 July
(D) 18 July
World Environment Day is celebrated on June 5 every year to remind people to save nature and the earth by stopping their non-environmentally friendly activities. Let's know more about this day, its history, significance, and theme.
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