List of top Questions asked in BITSAT- 2013

For the dissociation reaction, \( \text{H}_2 \rightarrow \text{H} + \text{H} \), \( \Delta H = 162 \, \text{Kcal} \), heat of atomisation of H is
If 1.0 mole of \( \text{I}_2 \) is introduced into a 1.0 litre flask at 1000 K, at equilibrium (\( K_c = 10^{-6} \)), which one is correct?
For the reaction \( \text{CO(g)} + \frac{1}{2} \text{O}_2 (g) \rightarrow \text{CO}_2 (g) \), \( K_c \) is

The most stable carbocation among the following is 

The Bohr orbit radius for the hydrogen atom (\( n = 1 \)) is approximately 0.530 Å. The radius for the first excited state (\( n = 2 \)) orbit is (in Å)
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution, the ratio of volumes of hydrogen evolved is:
The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?
Among the following four structures I to IV, it is true that
The oxidation state of sulphur in \( \text{Na}_2 \text{S}_4 \text{O}_6 \) is
Using MOT, which of the following pairs denote paramagnetic species?
Increasing order of rms velocities of \( \text{H}_2 \), \( \text{O}_2 \), \( \text{N}_2 \) and \( \text{HBr} \) is
The screening effect of \( d \)-electrons is
The ions \( \text{O}^{2-} \), \( \text{F}^- \), \( \text{Na}^+ \), \( \text{Mg}^{2+} \) and \( \text{Al}^{3+} \) are isoelectronic. Their ionic radii show:
When the first ionisation energies are plotted against atomic number, the peaks are occupied by
How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M \( \text{HNO}_3 \)? The concentrated acid is 70% \( \text{HNO}_3 \).
Nucleophilic addition reaction will be most favoured in
Identify the product C in the series
The pair in which both species have same magnetic moment (spin only value) is:
Which one of the following reactions is expected to readily give a hydrocarbon product in good yields?

What will be the correct structural formula of the product for the following reaction? 

The greenhouse effect is because of the
At high pressure, the entire surface gets covered by a monomolecular layer of the gas follows
Which of the following is incorrect with respect to property indicated?

Which of the following is not the product of dehydration of \( \text{OH} \)? 



Which of the following is less acidic among the given halogen compounds?