COMSATS Chemistry — Chemical Bonding
Chemical Bonding is part of the Chemistry section of the NTS NAT-IE test COMSATS admits on (10 of the 90 MCQs). It breaks into 2 subtopics, and we hold 29 NAT-pattern practice MCQs on it, each with a written explanation. Tap a subtopic below to practise just that.
Subtopics (2)
How Chemical Bonding is tested
Across the 7 NAT-pattern papers on ParhaiKrlo, Chemical Bonding accounts for 8 questions. It appears in all 7, about 1.1 questions a paper. The heaviest was COMSATS Past Paper 03, with 2 questions, and the most recent is COMSATS Past Paper 07, with 1.
| Paper | Questions |
|---|---|
| COMSATS Past Paper 07 | 1 |
| COMSATS Past Paper 06 | 1 |
| COMSATS Past Paper 05 | 1 |
| COMSATS Past Paper 04 | 1 |
| COMSATS Past Paper 03 | 2 |
| COMSATS Past Paper 02 | 1 |
| COMSATS Past Paper 01 | 1 |
Chemical Bonding MCQs from the NAT-pattern papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · COMSATS Past Paper 07 · Chemical Bonding
Metallic bonding is best described as:
- A.pairs of electrons shared between two non-metal atoms
- B.electrons transferred from a metal to a non-metal
- C.positive metal ions held in a sea of delocalised electrons
- D.hydrogen atoms bridging two electronegative atoms
Show answer
Answer: C. positive metal ions held in a sea of delocalised electrons — Metal atoms release outer electrons into a shared 'sea' that holds the ions together.
- Q2 · COMSATS Past Paper 06 · Chemical Bonding
Which of the following molecules is polar?
- A.CO₂
- B.H₂O
- C.CH₄
- D.BF₃
Show answer
Answer: B. H₂O — Water is bent, so its O–H dipoles do not cancel.
- Q3 · COMSATS Past Paper 05 · Chemical Bonding
The shape of a boron trifluoride (BF₃) molecule is:
- A.tetrahedral
- B.trigonal planar
- C.pyramidal
- D.linear
Show answer
Answer: B. trigonal planar — B has three bond pairs and no lone pairs: trigonal planar, 120°.