AIPMT 2002 | NEET Year Wise Previous Years Questions

MCQ (Single Correct Answer)

Zn gives H₂ gas with H₂SO₄ and HCl but not with HNO₃ because

Zn act as oxidising agent when react with HNO₃

HNO₃ is weaker acid than H₂SO₄ and HCl

In electrochemical series Zn is above hydrogen

NO$$_3^ - $$ is reduced in preference to hydronium ion.

MCQ (Single Correct Answer)

$${}_{92}^{235}$$U, nucleus absorbs a neutron and distintegrate in $${}_{54}^{139}$$Xe, $${}_{38}^{94}$$Sr and $$x$$ so, what will be product $$x$$?

$$\alpha $$-particle

$$\beta $$-particle

MCQ (Single Correct Answer)

Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagetic with the spin of electron?

[Fe(CN)₆]^4$$-$$

[Cr(NH₃)₆]³⁺

MCQ (Single Correct Answer)

The hypothetical complex chloro diaquatriammine cobalt(III) chloride can be represented as

[CoCl(NH₃)₃(H₂O)₂]Cl₂

[Co(NH₃)₃(H₂O)Cl₃]

[Co(NH₂)₃(H₂O)₂Cl]

[Co(NH₃)₃(H₂O)₃]Cl₃