Honey, silk and lac are #NTA #NEET #NEETquestion #mcq #2021 #Biology - Study24x7
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20 followers study24x7 08 Sep 2021 04:45 PM study24x7 study24x7

Honey, silk and lac are #NTA #NEET #NEETquestion #mcq A

artificial elements

B

secretory substance of plants

C

secretory substance of insects

D

all of these

NEET / Medical
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  • Dev kumar
    • Honey bees are social insects. They live as colonies. They are active throughout the year. They feed on the pollen and nectar of flowers. In India there are four different varieties of honey bees. Of these, only three species are useful in collecting honey. The raw silk is used in the manufacture of woven materials, knitted fabrics and garments. It is also used in parachutes, parachute cords, fishing lines, as sieves in flour mills, insulation coil for telephones and wireless receivers, and tyres of racing cars. Lac is one of the most versatile natural resinous material. It has a unique combination of properties which render it useful in the plastics, electrical, adhesive, leather, wood finishing and other industries. In the electrical industry it used in the form of insulating varnishes and moulded insu-lators. It possesses very good adhesion to mica. It is an ingredient of varnishes, polishes, finishes wood used for protective and decorative purposes. It 190 is a principal ingredient of sealing wax . It is also used in the manufacture of glazed paper, printing and water proof inks, nail polishes, den-tal plates, ammunition, bangles, wax crayons and optical frames.

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