MODEL PAPER 2025 — Chemistry STD 12 Science — Question

A vitamin which plays a vital role in the coagulating property of blood is :

Which of the following compound gives an oxime with hydroxylamine:

Carbon tetrachloride has a dipole moment:

A solution has an osmotic pressure of 0.0821 atm at 300 K. Its concentration would be?

Change occurs in hybridisation state of carbonyl carbon in nucleophilic addition reaction is :

Which of the following compound gives yellow precipitate on heating with Alkaline solution of iodine?

Which of the following is correct with respect to a first order reaction?

Two beakers of capacity 500mL were taken. One of these beakers, labelled as “A”, was filled with 400mL water whereas the beaker labelled “B” was filled with 400mL of 2M solution of NaCl. At the same temperature both the beakers were placed in closed containers of same material and same capacity as shown in. At a given temperature, which of the following statement is correct about the vapour pressure of pure water and that of NaCl solution.

Glycerol is a :