GATE XL branch:xl PYQs & Answers — Page 123

Questions 1221–1230 of 1235. Imported answers require independent review unless marked reviewed.

Topic practice 1235 questionsPage 123 of 124

Water flowing at a rate of 1 kg/min is heated from 12 to 80 °C with flue gas supplied at a rate of 3 kg/min. The temperature and specific heat of the flue gas are 180 °C and 1.05 kJ/kg.K, respectively. If specific heat of water is 4.2 kJ/kg.K and the flow is parallel, then the logarithmic mean temperature difference will be ______ °C.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The Lineweaver-Burk plot of an enzymatic reaction shows V_max of 160 μmol/l.min and K_m of 60 μmol/l. For a substrate concentration of 40 μmol/l, the velocity of the reaction is estimated to be ____ μmol/l.min.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A suspension containing 2 × 10⁴ spores of organism A having a D₁₂₁.₁°C value of 1.5 min and 8 × 10⁵ spores of organism B having a D₁₂₁.₁°C value of 0.8 min is heated at a constant temperature of 121.1 °C. The heating time needed to obtain a probability of spoilage ‘1 in 1000’ is ________ min.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In an evaporation process, a compressor picks up 0.05 m³ air in each revolution and compresses 500 kg of air per minute. If the specific volume of air is 0.9 m³/kg, then the compressor speed is _________ rpm.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

For a soybean oil extraction system, solvent:soy ratio is maintained at 0.5:1 (w/w). Original seed contains 18% oil (w/w). If the meal (soy solid) after final desolventization has 0.01 kg oil per kg oil free meal, then the effectiveness of the solvent (kg oil/ kg solvent) in the extraction process is ________ .

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The event would have been successful if you ____________ able to come.

Your answerChoose one option.

are

had been

have been

would have been

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

There was no doubt that their work was thorough.

Which of the words below is closest in meaning to the underlined word above?

Your answerChoose one option.

pretty

complete

sloppy

haphazard

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Four cards lie on a table. Each card has a number printed on one side and a colour on the other. The faces visible on the cards are 2, 3, red, and blue.

Proposition: If a card has an even value on one side, then its opposite face is red.

The cards which MUST be turned over to verify the above proposition are

Your answerChoose one option.

2, red

2, 3, red

2, blue

2, red, blue

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

What is the value of x when

Your answerChoose one option.

-1

-2

Cannot be determined

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Two dice are thrown simultaneously. The probability that the product of the numbers appearing on the top faces of the dice is a perfect square is

Your answerChoose one option.

1/9

2/9

1/3

4/9

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE XL branch:xl PYQs

Question 111

Question 112

Question 113

Question 114

Question 115

Question 116

Question 117

Question 118

Question 119

Question 120