- عمل تقطیر
- اکسیڈیشن
- عمل تصعید
- عمل تبخیر
- A
-
عملِ تقطیر کو ڈِسٹیلیشن کہتے ہیں۔
اس طریقہ کار میں مختلف مائعات کو مختلف درجہ حرارت پر گرم کر کے بخارات میں تبدیل کر کے الگ کیا جاتا ہے۔
Chemistry MCQs
All Chemistry MCQs are included in this section of ETEST Academy’s Website. All Chemistry MCQs are completely solved with detailed answers. All Chemistry MCQs are taken from different Current & Past Papers. Our team updates ETEST Website on daily basis.
What is unit of Charges in SI?
- Columb
- Power
- Current
- Electron
- a
The chemical name of laughing gas is:
- Nitrous Oxide
- Nitric Acid
- Nitrogen Pentoxide
- None of these
- a
-
Its chemical compound of an Oxide and Nitrogen.
Its Molecular Formula is N2O.
Its colorless and non-flammable gas.
If the ratio of solute to solvent is low, the solution is said to be:
- Dilute
- Saturated
- Concentrated
- Supersaturated
- a
A method which is used to separate coloured chemicals or substances is known as:
- Distillation
- Filtration
- Sublimation
- Paper Chromatography
- d
-
Chromatography is a process to separate the components of mixture.
Paper Chromatography is a type of Partition Chromatography.
The smallest particle of compound, made up of group of atoms is known as:
- Isotopes
- Molecule
- Mixture
- Alloy
- b
-
A material composed of two or more elements is called Compound i.e. Water, Carbon Dioxide, Sodium Chloride and etc.
Which statement is incorrect about gas molecules?
- Molecules have low attractive forces
- Molecules don't collide with one another
- Molecules are widely separated
- Molecules free to move in any direction
- b
-
A group of atoms is called Molecule.