Chemistry Test ...

A 0.1 M solution of which salt is most acidic?

Which is the strongest acid amongst the following compounds?

Select the correct order of metallic character :

In hydrogen atom which transition produces a photon with highest energy?

The correct basicity order of indicated atoms P, Q and R is -

Select the incorrect statement regarding N^3–, O^2–, F^-, Na⁺ and Mg²⁺

Dioxygen difluoride (O₂F₂) is a highly oxidising and unstable liquid. At 300 K it decomposes back to oxygen and fluorine, which are both gases at this temperature. The equation for the reaction is given below. 0.1 g of O₂F₂ was left for 24 hours and the 24.9 ml of gas mixture evolved was collected at 300 K and 100 kPa. What % by mass of dioxygen difluride has decomposed by this time?
O₂F₂(l) → O₂(g) + F₂(g)

Which of the following cyclic dienes does not show geometrical isomerism?

Which of the following property is different for two different isoelectronic homonuclear diatomic species?

In an analysis of solutions containing Barium ions (Ba²⁺), 50 ml of solution gave 0.233 g of BaSO₄ upon addition of sufficient sulphuric acid to precipitate all the Ba²⁺ ions present. What is concentration (in M) of Ba²⁺ ions in the solution.