GATE ES format:nat PYQs & Answers — Page 5

Questions 41–50 of 122. Imported answers require independent review unless marked reviewed.

Topic practice 122 questionsPage 5 of 13

An industry releases three greenhouse gases (GHGs), CO

(5 kg/day), CH

(0.5 kg/day), and N

O (0.1 kg/day). The industry flares the CH

before it is released to the atmosphere. The Global Warming Potential (GWP) are as follows: CO

= 1, CH

= 21, N

O = 310. The annual GWP of GHGs released from the industry is ______ kg CO

equivalent. (rounded off to the nearest integer)

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Water from a hand pump located near a landfill has 1 mg/L arsenic (oral carcinogenic potency factor = 1.75 (kg-day)/mg). A person who lives nearby drinks 2 L/day water from this hand pump for 10 years. Assume body weight of 70 kg and 70 years as average life duration. Chances of this person getting excess risk of cancer is __________________ ×10

. (rounded off to three decimal places)

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has a local maximum at x = ______ (an integer value) in the range x = −2 to +2.

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Consider the equation

; with y = 1 at x = 0.

The value of y at x = 1 is ______ (rounded off to 2 decimal places).

Take the value of e (base of natural logarithm) as 2.7.

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A municipal solid waste digester generates 1000 kg of methane gas. The volume of the tank need to store this gas at 30 °C and 3 atmospheric pressure is ______ liters (an integer value).

Use R=0.082 L-atm/mole-K, Atomic weights of C=12, and H=1

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A Class-A pan was setup adjacent to a lake for measuring evaporation losses in the lake. The depth of water in the pan at the begining of a certain week was 250 mm. In that week, there was a rainfall event with 10 mm depth. Water depth in the pan at the end of the week was 240 mm. The pan coefficient is 0.8.

The estimated lake evaporation during the week was ______ mm (an integer value).

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Consider the equation for a curve,

The area enclosed by the curve, the

-axis (

line); the vertical lines passing through

and

is ______ (rounded off to 2 decimal places)

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The pH of a solution containing 0.1M of acetic acid and 0.05 M of sodium acetate is ______ (rounded off to 2 decimal places).

The pKₐ value of ionization of acetic acid is 4.76.

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The ionic strength of a solution containing 0.01M of CaCl₂ and 0.001M of Na₂SO₄ is ______ M (rounded off to 3 decimal places).

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The concentration of Ozone corresponding to a mixing ratio of 120 ppb at pressure of 1 atmosphere and temperature of 25°C is ______ μg/m³ (rounded off to 1 decimal place).

Atomic weight of oxygen = 16; R= 8.314 J/K-g.mole.

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GATE ES format:nat PYQs

Question 64

Question 65

Question 32

Question 33

Question 34

Question 35

Question 49

Question 50

Question 51

Question 52