1

IIT-JEE 2002 Screening

MCQ (Single Correct Answer)
Identify the correct order of acidic strengths of CO2, CuO, CaO, H2O
A
CaO < CuO < H2O < CO2
B
H2O < CuO < CaO < CO2
C
CaO < H2O < CuO < CO2
D
H2O < CO2 < CaO < CuO
2

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)
Read the following statement and explanation and answer as per the options given below

ASSERTION : The first ionization energy of Be is greater than that of B.

REASON : 2p orbital is lower in energy than 2s.
A
If both assertion and reason are CORRECT, and reason is the CORRECT explanation of the assertion
B
If both assertion and reason are CORRECT, and reason is not the CORRECT explanation of the assertion
C
If assertion is CORRECT, but reason is INCORRECT
D
If assertion is INCORRECT, but reason is CORRECT
3

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)
Amongst H2O, H2S, H2Se and H2Te, the one with the highest boiling point is
A
H2O because of hydrogen bonding
B
H2Te because of higher molecular weight
C
H2S because of hydrogen bonding
D
H2Se because of lower molecular weight
4

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)
The correct order of acidic strength is
A
Cl2O7 > SO2 > P4O10
B
CO2 > N2O5 > SO3
C
Na2O > MgO > Al2O3
D
K2O > CaO > MgO

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