Question

1) Nitrogen can be only fixed by lighting.


2) Lactobacillus is the bacteria which coagulate milk to form curd.


3) LDPE stands for Low-density polyethylene.


4) Spandex is the material used to make badminton rackets.​

Answer 1

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1) Nitrogen can be only fixed by lighting. (False)

• Lightning is a natural way.
• Nitrogen in the atmosphere can be transformed into a plant-usable form, a process called nitrogen fixation, by lightning.
• There are three major ways in which this happens: first, by lightning; second, by industrial methods; finally, by bacteria living in the soil.

2) Lactobacillus is the bacteria which coagulate milk to form curd. (True)

• Lactobacilli grow well in milk and foods made from milk.
• They're responsible for the "souring" of milk.

3) LDPE stands for Low-density polyethylene. (True)

• LDPE (low density polyethylene) is a soft, flexible, lightweight plastic material.
• LDPE is noted for its low temperature flexibility, toughness, and corrosion resistance

4) Spandex is the material used to make badminton rackets. (False)

• Spandex is a lightweight, synthetic fiber.
• It is used to make stretchable clothing such as sportswear.