NEET 2013 (Karnataka)

Number of isomeric alcohols of molecular formula C6H14O which give positive iodoform test is

In DNA, the linkages between different nitrogenous bases are

In which of the following ionization processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic.

The outer orbitals of C in ethane molecule can be considered to be hybridized to give three equivalent sp2 orbitals. The total number of sigma \(\left( \sigma \right)\) and pi \(\left( \pi \right)\) bonds in ethane molecule is

In which of the following pair both the species have sp3 hybridization ?

The pair of species that has the same bond order in the following is

For a reaction between A and B the order with respect to A is 2 and the other with respect to B is 3. The concentrations of both A and B are doubled, the rate will increase by a factor of

A reaction is 50% complete in 2 hours and 75% complete in 4 hours. The order of reaction is

Dettol is the mixture of

Nitrogen detection in an organic compound is carried out by Lassaigne's test. The blue colour formed corresponds to which of the following formulae?

Crystal field splitting energy for high spin d4 octahedral complex is

In a particular isomer of [Co(NH3)4Cl2]o, the Cl\(-\)Co\(-\)Cl angle is 90o, this isomer is known as

Which among the following is a paramagnetic complex?

The anion of acetylacetone (acac) forms Co (acac)3 chelate with Co3+. The rings of the chelate are

The correct IUPAC name for [CrF2(en)2]Cl is

Which is diamagnetic?

Sc (Z = 21) is a transition element but Zn (Z = 30) is not because

Consider the half-cell reduction reaction
Mn2+ + 2e\(-\) \(\to\) Mn, Eo = \(-\)1.18 V
Mn2+ \(\to\) Mn3+ + e\(-\), Eo = \(-\) 1.51 V
The \(E\)o for the reaction 3 Mn2+ \(\to\) Mno + 2Mn3+, and possibility of the forward reaction are ...

How many gram of cobalt metal will be deposited when a solution of cobalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1 Faraday = 96,500 C; Atomic mass of Co = 59 u)

Which one of the following statements is not true?

What is the density of N2 gas 227oC and 5.00 atm. pressure? (R = 0.082 L atm K\(-\)1 mol\(-\)1)

In the following reaction :

Product 'P' will not give

Accumulation of lactic acid (HC3H5O3), a monobasic acid in tissues leads to pain and a feeling of fatigue. In a 0.10 M aqueous solution, lactic acid is 3.7% dissociates. The value of dissociation constant, Ka, for this acid will be

At 100oC the Kw of water is 55 times its value at 25oC. What will be the pH of neutral solution? (log 55 = 1.74)

The dissociation constant of weak acid is 1 \(\times\) 10\(-\)4. In order to prepare a buffer solution with a pH = 5, the [Salt]/[Acid] ratio should be

The values of Ksp of CaCO3 and CaC2O4 are 4.7 \(\times\) 10\(-\)9 and 1.3 \(\times\) \(-\)9 respectively at 25oC. If the mixture of these two is washed with water, what is the concentration of Ca2+ ions in water ?

On hydrolysis of a ''compound'', two compounds are obtained. One of which one treatment with sodium nitrite and hydrochloric acid gives a product which does not respond to iodoform test. The second one reduces Tollens reagent and Fehling's...

Some reactions of amines are given. Which one is not correct?

Identify the incorrect statement, regarding the molecule XeO4 :

Which statement is wrong?

Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O?

The metal oxide which cannot be reduced to metal by carbon is

In Castner-Kellner cell for production of sodium hydroxide

Which condition is not satisfied by an ideal solution?

In an experiment it showed that 10 mL of 0.05 M solution of chloride required 10 mL of 0.1 M solution of AgNO3, which of the following will be the formula of the chloriode (X stands for the symbol of the element other than chlorine)

Arrange the following in increasing order of stability

What is the hybridisation state of benzyl carbonium ion?

Given :

I and II are

Homolytic fission of the following alkanes forms free radicals CH3 \(-\) CH3, CH3 \(-\) CH2 \(-\) CH3, (CH3)2CH \(-\) CH3, CH3 \(-\) CH2 \(-\)CH(CH3)2.
Increasing order of stability of the radicals is

Which of the following chemical system is non aromatic ?

According to law of photochemical equivalence the energy absorbed (in ergs/mole) is given as (h = 6.62 \(\times\) 10\(-\)27 ergs, c = 3 \(\times\) 1010 cm s\(-\)1, NA = 6.02 \(\times\) 10\(-\)23 mol\(-\)1)

The outer electronic configuration of Gd (At. No. 64) is

Three thermochemical equations are given below
(i)  C(graphite) + O2(g) \(\to\) CO2(g); \(\Delta\)rHo = x kJ mol\(-\)1
(ii)  C(graphite) + \({1 \over 2}\)O2(g) \(\to\) CO(g); \(\Delta\)rHo = y kJ mol\(-\)1
(iii)  CO(g) + $${1 \over 2...

When 5 litres of a gas mixture of methane and propane is perfectly combusted at 0oC and 1 atmosphere, 16 litres of oxygen at the same temperature and pressure is consumed, The amount of heat released from this combustion in kJ (\(\Delta\)H...