NEET (UG) entrance exam Question Bank Solutions

The ratio of the ionization energy of H and Be⁺³ is ______.

The important factor in the stabilization of a colloidal solution is ______

When chlorine is passed over dry slaked lime at room temperature, the product formed is ______

Which of the following statements are correct?

1. The hybridisation found in cation of solid PCl5 is sp³.
2. In AB₂L₂ type, the BAB bond angle is always greater than the normal tetrahedral bond angle.
3. In \[\ce{ClO^{-}_3}\] NH₃ and XeO₃, the hybridisation and the number of lone pairs on the central atoms are same.
4. In· discrete P₄ molecule, there are six P—P bonds and four lone pairs of electrons.

Which reaction, with the following value of ΔH, ΔS at 400 K is spontaneous and endothermic?

The treatment of benzene with iso - butene in the presence of sulphuric acid gives:

On increasing pressure, melting point of ice ______.

Which of the following contributes to the double helical structure of DNA?

Ethers and alcohols are ______.

Maximum decarboxylation occurs in:

The right option for the statement “Tyndall effect is exhibited by”, is:

Ethers are different from their corresponding isomeric monohydric alcohols with respect to the ______.

Williamson's synthesis is used for the preparation of an ______.

Choose the INCORRECT statement

In which of the following molecule does the central atom have two p-orbitals unused?

Which of the following has the dimension of ML⁰T^–2?

Choose the INCORRECT statement from the following.

A 100 g of sample of haemoglobin on analysis was found to contain 0.34% Fe by mass. If each haemoglobin molecule has four Fe²⁺ ions, the molecular mass of haemoglobin is: (Fe = 56 amu)

The metal that forms a self-protecting film of oxide to prevent corrosion is ______

Muddy water can be purified through coagulation using ______.