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1
IIT-JEE 2002 Screening
MCQ (Single Correct Answer)
+2
-0.5
Identify the least stable ion amongst the following
A
Li-
B
Be-
C
B-
D
C-
2
IIT-JEE 2002 Screening
MCQ (Single Correct Answer)
+1
-0.25
Which of the following molecular species has unpaired electrons(s)?
A
N2
B
F2
C
$$O_2^-$$
D
$$O_2^{2-}$$
3
IIT-JEE 2002 Screening
MCQ (Single Correct Answer)
+1
-0.25
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
4
IIT-JEE 2002 Screening
MCQ (Single Correct Answer)
+1
-0.25
Rutherford's experiment, which established the nuclear model of the atom, used a beam of
A
$$\beta-particles$$, which impinged on a metal foil and got absorbed
B
$$\gamma-particles$$, which impinged on a metal foil and ejected electrons
C
helium atoms, which impinged on a metal foil and got scattered
D
helium nuclei, which impinged on a metal foil and got scattered

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