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Which of the following statement are inc...

Which of the following statement are incorrect about phenol-formaldehyde resin ?

A

Novolac or resol is a linear polymer and is used in the manufacture of adhesive

B

Bakelite is a cross-linked polymer and is used in making switches and plugs

C

Novalac is perpared when `(P//F)` (phenol/formaldehyde) ratio if greater than 1, wheares bakehte is perpared when `(P//F)` ratio is less than 1

D

Novolac is prepared when `P//F lt 1`, and bakelite is prepared when `P//F gt 1`

Text Solution

Verified by Experts

The correct Answer is:
D
Novolac is prepareed when `P//F lt 1`, and bakelite is prepared when `P//F gt 1`
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CAREER POINT-MOCK TEST 6-Part (B) (CHEMISTRY)
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  2. Incorrect order of boiling point is -

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  3. The electron affinity of the following element can be arranged -

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  4. (A) would be -

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  5. Which of the following statement are incorrect about phenol-formaldehy...

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  6. Product formed in above reaction is -

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  7. Which of the following statement is not true for detergants ?

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  8. The incorrect structure of glucine at given pH are-

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  9. Which of the following sets of quantum numberrs discribes the elecron ...

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  10. An aqueous solution of ethanol has density 1.025 g/ mL and it is 2 M. ...

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  11. Select correct adsorption isobars for chemisorption and physisorption ...

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  12. Which of the following is involved in the extraction of Ag from argent...

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  14. In which of the following 2^(nd) anion is more stable than first ?

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  15. Find out the product of following reaction : X and Y are :

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  16. CH(3)-underset(OH)underset(|)overset(CH(3))overset(|)(C)-underset(NH(2...

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  17. How many molecules of RMgX are consumed in the above given reaction ?

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  18. In a hydrogen atom, the transition takes place from n = 3 to n = 2 ....

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  19. If 30g of a solute of molecular weight 154 is dissolved in 250 g of be...

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  20. If 50% of CO(2) converts to CO at the following equilibrium : 1/2C(...

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