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Standard X
Chemistry
Glass
Who is my par...
Question

Who is my partner ?
'A' column 'B' column
a. Lead glass i. Plates
b. Bakelite ii. Mattresses
c. Thermocol iii. Electric bulb
d. Optic glass iv. Electric switch
e. Polypropylene v. Lens

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Solution


'A' column 'B' column
a. Lead glass i. Electric bulb
b. Bakelite ii. Electric switch
c. Thermocol iii. Plates
d. Optic glass iv. Lens
e. Polypropylene v. Mattresses

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Q.

Match the entries of column I with column II

Polymer Uses
(a) Polyvinyl chloride (i) Used to manufacture unbreakable crockery
(b) Polythene (ii) Used for insulation of electrical wires
(c) Bakelite (iii) Used to manufacture food packets
(d) Melamine (iv) Used to manufacture electrical switches

Q. Match the Column -I with Column-II
Column-IColumn-II(Polymer)(Monomer)(A) Bakelite(p) ε -caprolactum(B) Polypropylene(q) Ethylene glycol +Phthalic anhydride(C) Glyptal(r) Propene(d) Nylon-6(s) Phenol+Formaldehyde
Q. Match the terms in Column I to the symbols in Column II and match further to the correct explanation in Column III:
Column I Column II Column III
1. Bulb (a) Figure (i) Has a coiled tungsten filament.
2. Switch (b) Figure (ii) Series of cells connected with correct polarity.
3. Fuse (c) Figure (iii) Source of electric current.
4. Cell (d) Figure (iv) Used to close or open an electric circuit.
5. Battery (e) Figure (v) Has a wire with how melting point.
Q. Match the terms of column A correctly with the phrases given in column B.
Column-AColumn-B
(i) Polyester(a) Prepared by using wood pulp
(ii) Teflon(b) Used for making parachutes and stockings
(iii) Rayon(c) Electrical switches
(iv) Nylon(d) Fabrics do not wrinkle easily
(v) Bakelite(e) Fire resistant clothes
(vi) Melamine(f) Used to make non-stick cookwares

Q.

Match the entries of column I with column II
Column AColumn B(a) First artificial plastic(i) Polythene(b) First artificial fibre(ii) DNA (c) Biopolymer(iii) Nylon (d) Linear polymer(iv) Bakelite


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