1
GATE CE 2002
MCQ (Single Correct Answer)
+1
-0.3
In natural water, hardness is mainly caused by
A
$$Ca^{++}$$ and $$Mn^{++}$$
B
$$Ca^{++}$$ and $$Fe^{++}$$
C
$$Na^{+}$$ and $$K^{+}$$
D
$$Ca^{++}$$ and $$Mg^{++}$$
2
GATE CE 2002
MCQ (Single Correct Answer)
+2
-0.6
During a 6-hour storm the rainfall intensity was 0.8 cm/hr on a catchment of area 8.6 km2. The measured runoff volume during this period was 2,56,000 m3. The total rainfall was lost due to infiltration, evaporation and transpiration in cm/hr is
A
0.80
B
0.304
C
0.496
D
Sufficient information not available
3
GATE CE 2002
MCQ (Single Correct Answer)
+1
-0.3
Modulus of elasticity of M25 grade concrete in MPa is
A
25000
B
36000
C
45600
D
54000
4
GATE CE 2002
MCQ (Single Correct Answer)
+2
-0.6
Read the following two statements

$${\rm I}.\,\,\,\,\,\,\,\,\,\,\,\,$$ Maximum strain in concrete at the outermost compression fibre is taken to be $$0.0035$$ in bending
$${\rm II}.\,\,\,\,\,\,\,\,\,\,\,\,$$ The maximum compressive strain in concrete in axial compression is taken as $$0.002$$ Keeping the provisions of $$IS$$ $$456$$-$$2000$$ on limit state design in mind, which of the following is true?

A
Statement $${\rm I}$$ is true but $${\rm II}$$ is false
B
Statement $${\rm I}$$ is false but $${\rm II}$$ is true
C
Both statements $${\rm I}$$ and $${\rm II}$$ are true
D
Both statements $${\rm I}$$ and $${\rm II}$$ are false
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