Chemistry

Which of the following movements can be described as random motion?

A. wheelbarrow being pushed B. car traveling on a straight line C. Gas molecules colliding in a flask D. Planets…

5 years ago

Exhaust fumes discharged from a smoky vehicle gradually become invisible as a result of?

A. diffusion B. combustion C. absorption D. emission Correct Answer: Option A - diffusion

5 years ago

One mole of a compound M(HCO3)2 has a mass of 162g. Calculate the relative atomic mass of M. [H = 1, C =12, O = 16]

A. 122 B. 101 C. 53 D. 40 Correct Answer: Option D - 40 Explanation One of the mole of…

5 years ago

Which of the following compounds has the highest ionic character?

A. PCI5 B. SiCI4 C. AICI3 D. KCI Correct Answer: Option D - KCI

5 years ago

The crystal layers in graphite are held together by ________?

A. electrostatic forces B. van der Waals' forces C. hydrogen bonds D. covalent bonds Correct Answer: Option D - covalent…

5 years ago

Which of the following halogens is the most reactive?

A. F2 B. Br2 C. l2 D. Cl2 Correct Answer: Option A - F2

5 years ago

Which of the following reactions is not feasible?

A. Cl2 + 2Kl → 2KCI + I2 B. Cl2 + 2NaF → 2NaCI + F2 C. Zn + CuCI2…

5 years ago

In the Periodic Table, the elements that loss electrons most readily belong to?

A. Group 1 A B. Group 11 A C. Group 111 A D. Group V11 A Correct Answer: Option A…

5 years ago

Which of the following properties increases down a group in the Periodic Table?

A. Atomic radius B. Electronegativity C. Electon affinity D. Ionization energy Correct Answer: Option A - Atomic radius

5 years ago