2024 · Paper 1

Complete GATE XE 2024 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 61–63 of 175. Imported answers require review unless explicitly marked reviewed.

Question 61

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XE-CMSQ2 marksNeeds review

For chemical vapour deposition (CVD) process, which of the following statements is/are correct?

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

A.

Target material is striped off by the bombardment of positive ions

B.

Source material is vapourized and thermally decomposed

C.

Partial hydrolysis of alkoxide in water solvent

D.

Suitable for preparing films of high density and uniform thickness

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Question 62

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XE-CNAT2 marksNeeds review

At room temperature, the electrical conductivity and electron mobility for aluminium are 3.8 × 10^7 (Ω m)^−1 and 0.0012 m^2 (V s)^−1, respectively. Density of free electrons for aluminium at room temperature is (in units of m^−3) ______ × 10^27 (rounded off to nearest integer).

Given: Electrical charge on an electron is 1.6 × 10^−19 C.

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Question 63

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XE-CNAT2 marksNeeds review

A 2 mm thick palladium sheet of 1000 mm



cross section is used as a diffusional membrane to purify hydrogen. The hydrogen concentration is maintained at a steady state with



kg m



and



kg m



on the two sides of the membrane as shown in the figure below.



The rate of hydrogen purification is (in units of kg hr



) ______ × 10



(rounded off to one decimal place).

Given: The diffusion coefficient of hydrogen in palladium is 1.0 × 10



m



s



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