GATE CH 2021 Paper 1 — page 9

Questions 25–27 of 65. Imported answers require review unless explicitly marked reviewed.

Match the common name of chemicals in Group – 1 with their chemical formula in Group – 2.

Group – 1		Group – 2
P	Gypsum	I	Ca(H₂PO₄)₂
Q	Dolomite	II	CaSO₄.2H₂O
R	Triple superphosphate	III	CaCO₃.MgCO₃

The correct combination is:

Your answerChoose one option.

P – III, Q – II, R – I

P – III, Q – I, R – II

P – II, Q – III, R – I

P – II, Q – I, R – III

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For the function

the CORRECT statement(s) is/are

Your answerSelect all correct options. You can choose more than one.

is continuous at

is differentiable at

is continuous at

is differentiable at

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Feed solution F is contacted with solvent B in an extraction process. Carrier liquid in the feed is A and the solute is C. The ternary diagram depicting a single ideal stage extraction is given below. The dashed lines represent the tie-lines.

Diagram for Chemical Engineering question 17

The CORRECT option(s) is/are

Your answerSelect all correct options. You can choose more than one.

For the tie-lines shown, concentration of solute in the extract is higher than that in the raffinate

Maximum amount of solvent is required if the mixture composition is at W

Y represents the composition of extract when minimum amount of solvent is used

U represents the raffinate composition if the mixture composition is at M

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2021 · Paper 1

Question 15

Question 16

Question 17