BITSAT Chemistry Test - 8

The most stable free radical among the following is

In hydrogen atom, energy of first excited state is -3.4 eV. Then find out the K.E. of the electron in the same orbit of hydrogen atom

The reaction of aniline with benzaldehyde is

Which of the following has the smallest number of molecules?

The pH of blood does not appreciably change by a small addition of an acid or a base because blood

Elimination of bromine from 2- bromobutane results in the formation of

To become a carbohydrate a compound must contain at least

Structurally, which of the following are similar ions?

The standard enthalpy of formation (∆_f H^o) at 298 K for CH₄(g) is -74.8 KJ mol⁻¹. The additional information required to determine the average energy of C-H bond would be

If a mixture containing 3 moles of hydrogen and 1 mole of nitrogen is converted completely into ammonia, the ratio of volumes of reactants and products at the same temperature and pressure would be

Which of the following statements is incorrect?

Let electronegativity, ionisation energy and electron affinity be represented as EN, IP and EA respectively. Which one of the following equation is correct according to Mulliken?

The final product 'C' in the above reaction is

Which of the following can possibly be used as analgesic without causing addiction and any modification?

The coordination number of Fe(II) in oxyhaemoglobin is

Given that

The hardness of transition elements is due to their

Lanthanides and actinides resemble in

Faraday's law of electrolysis states that mass deposited on electrode is proportional to

In which of the following molecules hydrogen is more acidic?

The hydrocarbon which decolourises alkaline KMnO₄ solution ,but does not give any precipitate with ammonical silver nitrate is

Under what conditions of temperature and pressure, the formation of atomic hydrogen from meolcular hydrogen will be favoured most?

The pH of blood does not appreciably change by a small addition of acid or a base because blood

The isomers, which possess same structural formula, but differ in spatial arrangement of the group around the double bond, are called

Chlorine is passed into dilute, cold KOH solution. What are the oxidation numbers of chlorine in the products formed?

Wood charcoal is used to decolourise sugar because it

What are the products formed when ammonia reacts with excess chlorine?

The high ionisation potential of noble gases is due to their

Bottles containing C₆H₅I and C₆H₅CH₂I lost their original labels. They were labelled A and B for testing. A and B were separately taken in test tubes and boiled with NaOH solution. The end solution in each tube was made acidic with dilute HNO₃ and then some AgNO₃ solution was added. Substance B gave a yellow precipitate. Which one of the following statements is true for this experiment?

The total no. of electrons present in all the p-orbitals of bromine is

When sodium is treated with sufficient oxygen/air, the product obtained is

In a polymer 30% molecules have molecular weight 20,000, 40% molecules have molecular weight 30,000 and the rest 30% molecules have molecular weight 60000. The weight average molecular weight of the polymer is

What is the molecular formula of Plaster of Paris?

A 0.6% solution of urea (molecular weight = 60) would be isotonic with

Which of the following has Frenkel defects?

Liguid benzene burns in oxygen according to 2C₆H_6(l)+15O₂(g) → 12CO₂(g)+6H2O_(g). How many litres of oxygen are required for complete combustion of 39 gm of liquid C₆H₆ (At. wt.of C=12,O=16) 

A colloidal system in which gas bubbles are dispersed in liquid is known as