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1
GATE CE 2024 Set 1
MCQ (Single Correct Answer)
+1
-0.33

The following table gives various components of Municipal Solid Waste (MSW) and a list of treatment/separation techniques.

Component of MSWTreatment/separation technique
P - Ferrous metalsi - Incineration
Q - Aluminum and copperii - Rapid composting
R - Food wasteiii - Eddy current separator
S - Cardboardiv - Magnetic separator

The CORRECT match is

A

P-iii, Q-iv, R-i, S-ii

B

P-iv, Q-iii, R-ii, S-i

C

P-iii, Q-iv, R-ii, S-i

D

P-iv, Q-iii, R-i, S-ii

2
GATE CE 2023 Set 1
MCQ (More than One Correct Answer)
+1
-0
Identify the waterborne diseases caused by viral pathogens:
A
Acute anterior poliomyelitis
B
Cholera
C
Infectious hepatitis 
D
Typhoid fever
3
GATE CE 2022 Set 2
MCQ (Single Correct Answer)
+1
-0.33

A 100 mg of HNO3 (strong acid) is added to water, bringing the final volume to 1.0 liter. Consider the atomic weights of H, N, and O, as 1 g/mol. 14 g mol. and 16 g/mol, respectively. The final pH of this water is (Ignore the dissociation of water.)

A
6.5
B
2.8
C
8.5
D
3.8
4
GATE CE 2022 Set 1
MCQ (Single Correct Answer)
+1
-0.33

The total hardness in raw water is 500 milligram per liter as CaCO3. The total hardness of this raw water, expressed in milligram equivalent per liter, is (Consider the atomic weights of Ca, C, and O as 40 g/mol, 12 g/mol, and 16 g/mol, respectively.)

A
10
B
100
C
1
D
5
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