BITSAT Chemistry Test - JEE MCQ

An element has 2 electrons is K-shell, 8 electrons in L-shell, 13 electrons in M-shell and one electron in N-shell. The element is

1 mol of CH₄ contains

Which of the following alkyl group has the maximum + I effect?

The volume of 1.0 g of hydrogen in litres at N.T.P. is

The bromination of benzene in presence of FeBr₃ is an example of

The no. of essential amino acids in human body is

Toluic acid on reaction with Br₂ + Fe gives

A chemical reaction will be spontaneous if it is accompained by a decrease of

An ionic solid is a poor conductor of electricity because

The equilibrium constant for the following reaction will be 3 A + 2 B → C

The decomposition of a substance follows first order kinetics. If its conc. is reduced to 1/8 th of its initial value, in 24 minutes, the rate constant of decomposition process is

An example of water soluble vitamin is

Which of the following species has the highest ionization potential?

An adiabatic expansion of an ideal gas always has

Paracetamol is/are

A complex compound of Co³⁺ with molecular formula CoCl_xyNH₃ gives a total of three ions per molecule when dissolved in water. How many Cl⁻ ions satisfy primary as well secondary valencies in this complex?

What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?

Which of the following element belongs to the third row transition series?

The standard emf of the cell Zn + Cu²⁺ → Cu + Zn² is 1.10 V at 25^oC. The emf of the cell when 0.1 M Cu²⁺ and 0.1 M Zn^2⁺ solutions are used will be

Hardness of water is due to which pair of ions ?

The compound that decolourises alkaline KMnO₄ is

Which one of the following will undergo meta-substitution on monochlorination ?

The pH of gastric juice is normally

Nitrogen atom has an atomic number of 7 and oxygen has an atomic number 8. The total number of electrons in a nitrate ion will be

Reaction C₂H₅I + C₅H₁₁I + 2Na → C₂H₅ - C₅H₁₁ + 2NaI is called

Molecular formula C₅H₁₂O will show :

Amongst the compounds Mg₃N₂, NH₃ and N₂O₃, nitrogen shows an oxidation state of +3 in