NEET (UG) entrance exam Question Bank Solutions

If V₀ is the volume of a given mass of gas at 273 K at a constant pressure then according to Charle's law, the volume at 10°C will be:

On complete combustion, 0.246 g of an organic compound gave 0.198 g of carbon dioxide and 0.101 g of water. Determine the percentage composition of carbon and hydrogen in the compound:

Friedal craft's acetylation of benzene ring involves the use of ______.

Which one of the following is an essential amino acid?

Phosgene is the common name for ______.

Which of the following reacts with phenol to give salicylaldehyde after hydrolysis?

Which of the followings is a tricarboxylic acid?

In general, the property (magnitudes only) that shows an opposite trend in comparison to other properties across a period is ______. 

The volume of certain amount of an ideal gas is constant at STP. Which of the following changes is CORRECT at constant volume for the same amount of gas?

Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be ______.

Standard enthalpy of combustion at 25°C of hydrogen, cyclohexene (C₆H₁₀) and cyclohexane (C₆H₁₂) are – 240, – 3800 and – 3920 kJ/mol respectively. The heat of hydrogenation of cyclohexene is ______.

\[\ce{H2O2}\] is always stored in black bottles because ______. 

In laboratory, \[\ce{SiCl4}\] can be prepared by ______. 

Osmotic pressure of a solution containing 2 g dissolved protein per 300 cm³ of solution is 20 mm of Hg at 27°C. The molecular mass of protein is ______.

Two elements X and Y combine in the gaseous states to form XY in the ratio of 1 : 35.5 by mass. The mass of Y that will be required to react with 2 g of X is ______.

Which of the following increases with the increase in the concentration of the solution?

The substances which do NOT act as catalysts but increase the activity of the catalyst are called ______

Which of the possible molecule/species is having maximum values for dipole moment. (where "A" is the central atom)?

For a system to be in equilibrium, ΔG = 0 under conditions of constant.

Alkynes exhibit: