Chemistry/Chemistry MCQ Questions Set-11 Sample Test,Sample questions

Question:
A/an ___ flame is produced when the oxygen supply is sufficient.


 

1.red

2.orange

3.blue

4.green


Question:
Barium loses ____ electrons to achieve noble gas electron configuration.

1.1

2.2

3.3

4.4


Question:
Calcium salts used as fertilizer is:

1.Calcium Carbide

2.Calcium Carbonate

3.Calcium Cyanide

4.Calcium Sulphate


Question:
Dobereiner could identify only ......... triads from the elements known at that time.

1.1

2.3

3.4

4.2


Question:
During which change is energy absorbed?

1.Exothermic

2.Endothermic

3. Both A & B

4.Neither A nor B


Question:
Elements having same atomic numbers but different mass number are called ______.

 

 

1.isotones

2.Isotopes

3.isomopes

4.isobar


Question:
Hydrogenation process is associated with which of the following?

1.Rubber

2.Petroleum

3.Copper

4.Edible fats


Question:
If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?

1. only neutralisation reaction occurs, no gas is released

2.white-coloured precipitate is formed

3.CO2 gas comes out with brisk effervescence

4. H2 gas comes out with pop sound


Question:
In a compound the elements are always present in definite proportions by 

1.mass

2.volume

3.size

4.No option is correct


Question:
In case of a standard hydrogen electrode

1.absolute electrode potential is not zero

2.absolute electrode potential is zero

3.both absolute and standard electrode potential values are zero

4.electrode potential is zero only at 25 deg C


Question:
Kidney stones are composed of ______.

1.9OL

2.Sodium Chloride

3.Magnesium Nitrate

4.Calcium Bicarbonate


Question:
Mass number is always equal to ______.

1.number of protons

2.number of neutrons

3.sum of number of protons and number of electrons

4.sum of number of protons and number of neutrons


Question:
Ozone is an ______ of oxygen.

1.Allotrope

2.Isotope

3.Isobar

4.Isotone


Question:
pH of the human blood is ______.

1.Slightly Acidic

2.Highly Acidic

3.Slightly Basic

4. Highly Basic


Question:
Rust is formed from iron and

1.Carbon

2.Oxygen

3.Hydrogen

4.All of the above


Question:
Sour taste of lemon is due to the presence of which of the following ?

1.Citric acid

2.Acetic acid

3.Oxalic acid

4.Formic acid


Question:
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called _______.

1.Baker's process

2.Temp's process

3.Clarke's process

4.Lake's process


Question:
The hazardous component in most antifreeze is

1.Ethane alcohol

2.Ethylene Glycol

3.Ehtylene

4.Ethene


Question:
The most reactive of the following metals is


 

1.Al

2.Ca

3.Ni

4.Pb


Question:
The passage of an electric current through a conducting liquid causes ___________.

1.Galvanisation

2.Evaporation

3.Physical Reaction

4.Chemical Reaction


Question:
The phosphorus cycle differs from the biogeochemical cycles in that

1.does not have atmospheric reservoir

2.uses water more

3.have atmospheric reservoir

4.None of the above


Question:
The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its ___________.

1.Crystallisation

2.Melting point

3.Evaporation

4.Galvanisation


Question:
The vast amount of sea weeds present in oceans may produce an endless source of


 

1.Methane

2.Ocean thermal energy

3.Sea wave energy

4.Nuclear energy


Question:
tomic number of which of the following elements is greater than that of Zinc

1.Copper

2.Iron

3.Chromium

4.Bromine


Question:
What is a normal pH level in blood?

1.7.35 - 7.45

2.7.45 - 7.55

3.7.6 - 7.7

4.7 - 7.10


Question:
What is the general formula for a straight-chain alkane?

1.C2nH2n+3.

2.CnH2n+2

3. CnH2n

4.CnH3n+2.


Question:
What is the general formula of alkenes?

 

1.CnH2n

2.CnH2n+2

3.CnH2n-2

4.CnH2n-1


Question:
What is the natural source of Oxalic acid?

1.Tomato

2.Sour milk

3.Ant sting

4.Tamarind


Question:
What is the percentage of oxygen in Al2(SO4)3?

1.57.70%

2.56.10%

3.53.10%

4.52.60%


Question:
What is the product formed when sodium bicarbonate is heated strongly?

1.Sodium Carbonate

2.Sodium Hydroxide

3.Sodium Peroxide

4.Sodium Monoxide


Question:
What is the value of triple point (solid, liquid and gas) of Water?

1.273.16 C

2.-273.16 K

3.273.16 K

4.0 C


Question:
Which   one   of   the   following   is   not   a semiconductor?

1.Silicon

2.Germanium

3.Quartz

4.Gallium arsenide


Question:
Which among the following is an endothermic reaction?

1.Respiration

2.Combustion

3.Sweating

4.Burning of natural gas


Question:
Which among the following is an example of solid sol?

1.Milk of magnesia

2.Foam

3.Coloured gemstones

4.Rubber


Question:
Which among the following is white phosphorus?

1.P1

2.P6

3.P4

4.P5


Question:
Which base is present in lime water?

1.Sodium hydroxide

2.Magnesium hydroxide

3.Calcium hydroxide

4.Ammonium hydroxide


Question:
Which base is present in milk of magnesia?

1.Magnesium hydroxide

2.Ammonium hydroxide

3.Sodium hydroxide

4.Calcium hydroxide


Question:
Which compound is a saturated hydrocarbon?

1.Alkene

2.Alkane

3.Alkine

4.All of the above


Question:
Which element has the lowest ionization energy?

1.He

2.Ne

3.Fr

4.R


Question:
Which molecule is used up in photosynthesis?

1.Water

2.Carbohydrates

3.Oxgen

4.Sugar


Question:
Which of the following can be beaten and converted into thin sheets?

1.Zinc

2.Phosphorus

3.Sulphur

4.Oxygen


Question:
Which of the following elements is used for vulcanizing rubber?

1.Sulphur

2.Chlorine

3.Bromine

4.Phosphorus


Question:
Which of the following inert gases is placed in period 4 of the periodic table?

1.Kr

2.Rn

3.Xe

4.Ar


Question:
Which of the following is a Synthetic rubber?

1.Leoprene

2.Monoprene

3.Neoprene

4.Isoprene


Question:
Which of the following is also known as Carbolic Acid?

1.Phenol

2.Hydroxide

3. Sulphuric Acid

4.Ethanol


Question:
Which of the following is an inert gas most commonly found in light bulbs?

 

1.Argon

2.Hydrogen

3.Oxygen

4.Radon


Question:
Which of the following is not a semiconductor?

1.CdS

2.NaCl

3.Si

4.Ge


Question:
Which process usually requires water?

1.Physical weathering

2. Mass wasting

3.Chemical weathering

4.Erosion


Question:
______ is made by mixing iron with carbon and metals like chromium, nickel and manganese.

1.Ship

2.Stainless Steel

3.Rust

4.Ozone


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