Top 15 Examination Question And Answer For Chemist Students


Top 15 Examination Question And Answer For Chemist Student

Chemists study the composition of matter and its properties. They carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms. Chemists carefully measure substance proportions, reaction rates, and other chemical properties. Top 15 question and answer for chemist students below.


1.Q What is the compound name of Co(NO3)2?

Ans. Co(NO3)2 is cobalt (II) nitrate.

2.Q. What kind of bond is NH3?

Ans. NH3 has a covalent single bond among its nitrogen and hydrogen atoms.

3.Q.What kind of bond is NH3?

Ans. A buffer keeps the pH stable when an acid or base is added to a solution.

4.Q. Is mercury a heavier element than tin?

Ans. Yes, mercury is heavier than tin.

5.Q. How many protons are in the radioactive isotope 40/19 K?

Ans. There are 19 protons in the radioactive isotope 40/19 K.

6.Q. How many electrons does magnesium lose and nitrogen need to form Mg3N2?

Ans. Magnesium (Mg) loses 6 electrons and nitrogen (N) gains 6 electrons to form Mg3 N2 (magnesium nitride).

7.Q. What intermolecular force attracts two nonpolar molecules to each other?

Ans. The intermolecular force that attracts two nonpolar molecules is London dispersion forces, which are also called an induced dipole.

8.Q. What are a blood spatter analyst’s responsibilities?

Ans. The blood spatter analyst is able to figure out directionality based on how blood drops fall or are splashed across a surface. Going by the size and shape of the droplet, they can figure out if a victim was standing or running.

9.Q. What type of reaction produces a precipitate?

Ans. One type of chemical reaction is a precipitation reaction. In a precipitation reaction, the reactants mix and form a solid called the precipitate.

10.Q. What is the name for the compound MgBr2?

Ans. The name for the compound MgBr2 is magnesium bromide.

11.Q. What are the components of adenosine triphosphate ATP?

Ans. The chemical formula for ATP is C10H16N5O13P3.

12.Q. What is the Lewis structure of NI3?

Ans. The chemical formula NI3 is named nitrogen triiodide.

!3.Q.What is the formula for calcium chlorate?

Ans. The formula for calcium chlorate is Ca(ClO3)2. This formula can also be written as Ca Cl2 O6.

14.Q. What is the conjugate of a strong acid?

Ans. The conjugate of a strong acid is a weak base.

15.Q. Whose discovery of radium changed the world?

Ans. Two prominent scientists in the 1800’s, Marie and Pierre Curie discovered radium in 1898. Their discovery was the result of an in-depth examination of uranium– the element from which radium derives– and its radioactive rays.