Chemistry Questions Answers MCQ for various exams like SSC CGL, CPO, CHSL, High Court and other related exams.
- True solution is in which size of solute particles is
A) less than 10^-9 m
B) more than 10^-6 m
C) between 10^-6 m ans 10^-9 m
D) none of these
- Mercury in zinc amalgam is an example of what kind of solute-solvent binary solution?
A) solid-gas
B) gas- liquid
C) liquid-solid
D) solid-solid
- The colloidal system with solid as dispersed phase and liquid as dispersion medium is
A) aerosols
B) foam
C) fog
D) sols
- Tyndall effect is due to
A) scattering of light
B) dispersion of light
C) reflection of light
D) refraction of light
- Flocculation refers to
A) purification of colloidal solution
B) neutralisation of charge on colloidal particles
C) separating the particles of colloidal solution
D) movement of colloidal particles
- A substance which undergoes reduction is called
A) reducing agent
B) normalising agent
C) oxidising agent
D) catalyst
- Which of the following has the highest acidic strength among the following?
A) HF
B) HCl
C) HBr
D) HI
- Which of the following acid is used in lead storage battery?
A) sulphuric acid
B) boric acid
C) phosphoric acid
D) hydrochloric acid
- Methyl orange as an indicator of acid changes color from
A) blue to red
B) pink to orange
C) orange to pink
D) remains colourless
- Alkali is
A) water soluble base
B) water insoluble base
C) water soluble acid
D) water insoluble acid
- Rayon is
A) natural plastic
B) natural rubber
C) synthetic rubber
D) synthetic fibre
- Gypsum is an ore of?
A) calcium
B) magnesium
C) aluminium
D) potassium
- Which of the following is true about Tetra Ethyl Lead?
A) used in pencils
B) antiknock compound
C) used in lead storage battery
D) none of these
- What is carbonado?
A) allotrope of carbon
B) black diamond
C) cock charcoal
D) Black lead
- Which of the following is used in purification of water?
A) iodine
B) alum
C) zinc chloride
D) ammonia
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