AIPMT 2000

d\(\pi\) \(-\) p\(\pi\) bond present in

Which compound has planar structure?

For any reversible reaction, if we increase concentration of the reactants, then effect on equilibrium constant

Equilibrium constant Kp for following reaction
MgCO3(s) \(\rightleftharpoons\) MgO(s) + CO2(g)

How enzymes increases the rate of reactions

For the reaction H+ + BrO\(_3^ -\) + 3Br\(-\) \(\to\) 5Br2 + H2O
which of the following relation correctly represents the consumption and formation of products.

In quantitative analysis of second group in laboratory, H2S gas is passed in acidic medium for precipitation. When Cu2+ react with KCN, then for product, true statement is

Shape of Fe(CO)5 is

Which complex compound will give four isomers?

Which ion is colourless?

Which of the following shows maximum number of oxidation states?

Equivalent conductances of Ba2+ and Cl\(-\) ions are 127 and 76 ohm\(-\)1 cm\(-\)1 eq\(-\)1 respectively. Equivalent conductance of BaCl2 at infinite dilution is

Cell reaction is spontaneous when

For the disproportionation of copper
2Cu+  \(\to\) Cu2+ + Cu, Eo is
(Given Eo for Cu2+/Cu is 0.34 V and
Eo for Cu2+/Cu+ is 0.15 V.)

Which of the following expressions correctly
represents the relationship between the average
molar kinetic energy, KE, of CO and N2 molecules
at the same temperature ?

Which is maximum stable?

In Friedel-Crafts reaction , toluene can be prepared by

Which reagent converts propene to 1-propanol ?

Increasing order of electrophilic substitution for following compounds

Dihedral angle in staggered form of ethane is

2-Butene shows geometrical isomerism due to

Conjugate acid of NH2\(-\) is

Which statement is wrong about pH and H+?

A 300 grams radioactive sample at initial half life is 3 hours. After 18 hours remaining quantity

then A is

Which compound is electron deficient?

Which statement is wrong ?

CF2 \(=\) CF2 is monomer of

Which compound forms linear polymer due to H-bond?

In cube of any crystal A-atom placed at every corners and B-atom placed at every centre of face. The formula of compound is

Cation and anion combines in a crystal to form following type of compound

From the colligative properties of solution, which one is the best method for the determination of molecular weight of proteins and polymers?

Oxidation numbers of A, B, C are + 2, +5 and \(-\)2 respectively. Possible formula of compound is

Volume of CO2 obtained by the complete decomposition of 9.85 g of BaCO3 is

Isoelectronic species are

For given energy, E = 3.03 \(\times\) 10\(-\)19 Joules corresponding wavelength is (h = 6.626 \(\times\) 10\(-\)34 J sec, c = 3 \(\times\) 108 m/sec)

Which one of the following method is commonly used method for destruction of colloid?

The entropy change in the fusion of one mole of a
solid melting at 27oC (latent heat of fusion is 2930 J
mol–1) is :

2Zn + O2 \(\to\) 2ZnO;  \(\Delta\)Go = \(-\) 616 J
2Zn + S2 \(\to\) 2ZnS;  \(\Delta\)Go = \(-\) 293 J
S2 + 2O2 \(\to\) 2SO2;   \(\Delta\)Go = \(-\)408 J
\(\Delta\)Go for the following reaction
2ZnS + 3O2 \(\to\)  2ZnO + 2SO2 is...

For the reaction,
C2H5OH(l) + 3O2(g) \(\to\) 2CO2(g) + 3H2O(l)
which one is true

When an electron does transition from n = 4 to n = 2, then emitted line spectrum will be

The life span of atomic hydrogen is

For the given reaction, the particle X is
\(_6{C^{11}} \to {}_5{B^{11}} + {\beta ^ + } + X\)

Maximum frequency of emission is obtained for the transition

The relation between \(\lambda\) and T1/2 as (T1/2 \(\to\) half life)

Nuclear fission is best explained by

A capacitor is charged with a battery and energy stored is U. After disconnecting battery another capacitor of same capacity is connected in parallel to the first capacitor. Then energy stored in each capacitor is

Two bulbs of (40 W, 200 V), and (100 W, 200 V). Then correct relation for their resistances

A car battery of emf 12 V and internal resistance \(5 \times {10^{ - 2}}\) \(\Omega\)., receives a current of 60 amp, from external source, then terminal potential difference of battery is

The net resistance of the circuit between A and B is