Chemistry/Chemistry MCQ Questions Set-10 Sample Test,Sample questions

Question:
 reaction occurs when sodium sulphate reacts with barium chloride 

 

1.Single combination

2.Single displacement

3. Double displacement

4. Double combination

Posted Date:-2021-06-30 13:38:27


Question:
 Theory of Evolution tells us how life evolved from simple to more complex forms

 

1.Darwins

2.Wallace

3.Mendel's

4.Lamarck's

Posted Date:-2021-06-30 13:38:27


Question:
A change in which one or more new substances are formed is called _________.

1.Physical Change

2.Chemical Change

3.Rusting

4.Galvanisation

Posted Date:-2021-06-30 13:38:27


Question:
Adding which substance gives blue colour to glass?

1.Manganese oxide

2.Cobalt oxide

3.Chromium oxide

4. Iron oxide

Posted Date:-2021-06-30 13:38:27


Question:
Alkali metals can

1.be highly unstable at room temperature

2.vaporize at room temperature

3.easily gain electrons

4.easily lose electrons

Posted Date:-2021-06-30 13:38:27


Question:
All atoms of the same element have the same

1.number of protons

2.number of electrons

3.atomic number

4.All of the above

Posted Date:-2021-06-30 13:38:27


Question:
Atoms of same element having different mass numbers are called__________

1.Isobars

2.Isotopes

3.Isotones

4.Isomers

Posted Date:-2021-06-30 13:38:27


Question:
Atoms of the same element can differ in

1.Atomic number

2.Atomic mass

3.electrons

4.None of the above

Posted Date:-2021-06-30 13:38:27


Question:
Barbituric Acid was synthesized in 1864 by

1.Adolf von Baeyer

2.Marie Curie

3.Mendeleev

4.John Dalton

Posted Date:-2021-06-30 13:38:27


Question:
Carbon dioxide is one of the gases that cause the _________.

 

1.greenhouse effect

2.ozonification

3.oven phenomenon

4.sunburn

Posted Date:-2021-06-30 13:38:27


Question:
Covalent bonds are formed when electrons are

1.Transfer of electrons

2.Sharing of electrons

3.Dividing of electrons

4.All of the above

Posted Date:-2021-06-30 13:38:27


Question:
Group 7A of the periodic table contains the

1.most reactive metals

2.least reactive non metals

3.most reactive non metals

4.least reactive metals

Posted Date:-2021-06-30 13:38:27


Question:
How many carbon and hydrogen atoms are there in Propane, respectively?

 

1.2, 4

2.2, 6

3.4, 7

4.3, 8

Posted Date:-2021-06-30 13:38:27


Question:
In general the largest component of bog soils is

1.organic matter

2.water

3. living organisms

4.air

Posted Date:-2021-06-30 13:38:27


Question:
In the modern periodic table. periods ............ and ........ contain Lanthanoides and Actinoides.

 

1.3 and 4

2.6 and 7

3.4 and 5

4.5 and 6

Posted Date:-2021-06-30 13:38:27


Question:
Monazite is an ore of

1.Platinum

2.Radium

3.Uranium

4.Lanthanum

Posted Date:-2021-06-30 13:38:27


Question:
Non metal found in liquid state?

1.Chlorine

2.Bromine

3.Fluorine

4.Iodine

Posted Date:-2021-06-30 13:38:27


Question:
One turn of the citric acid cycle produces

1.two molecules of carbon dioxide are released

2.three molecules of NADH and one molecule of FADH2 are generated

3.one molecule of ATP or GTP is produced

4.All of the above

Posted Date:-2021-06-30 13:38:27


Question:
Plaster of Paris ______.

 

I. changes into gypsum on mixing with water

II. is CaSO4.2H2O

III. is used for decoration

 

1.Only I and II

2.Only I and III

3.Only II and III

4.All I, II and III

Posted Date:-2021-06-30 13:38:27


Question:
Synthetic detergents are prepared from

1.potassium salts of higher fatty­acids

2.sodium salts of higher fatty­acids

3.hydrocarbons of petroleum

4. glycerides

Posted Date:-2021-06-30 13:38:27


Question:
The chemical makeup of a rock is

1.Nutrients

2.Minerals

3.Metals

4.Water

Posted Date:-2021-06-30 13:38:27


Question:
The complexity and variety of organic molecules is due to

1.their interaction with water

2.their tremendously large sizes

3.the chemical versatility of carbon atoms

4.the variety of rare elements in organic molecules

Posted Date:-2021-06-30 13:38:27


Question:
The first two steps in the lithification process are

1.Cementation and Proposal

2.Compaction and Ratification

3.Compaction and Cementation

4.Ratification and Cementation

Posted Date:-2021-06-30 13:38:27


Question:
The mass number of an isotope of an element is 298. If its nucleus has 189 neutrons, what is its atomic number?

1.298

2.189

3.109

4.487

Posted Date:-2021-06-30 13:38:27


Question:
The mass of one molecule of oxygen is

 

1.2.3 x 10-23 g

2.3.3 x 10-23 g

3.4.3 x 10-23 g

4.5.3 x 10-23 g

Posted Date:-2021-06-30 13:38:27


Question:
The movement of water molecules through the plasma membrane is called ______.

 

1.Osmosis

2.Sedimentation

3.Precipitation

4.Transpiration

Posted Date:-2021-06-30 13:38:27


Question:
The principal quantum number indicates what property of an electron?

1.energy of electron

2.distance of electron from nucleus

3.both a & b

4.number of subshells

Posted Date:-2021-06-30 13:38:27


Question:
Turquoise is an ore/mineral of

1.Copper

2.Manganese

3.Mercury

4.Tin

Posted Date:-2021-06-30 13:38:27


Question:
What happens to electrons in an ionic bond?

1.collision of electrons

2.Sharing of electrons

3.Both A & B

4.Transfer of electrons

Posted Date:-2021-06-30 13:38:27


Question:
What two elements are used to make bronze?

1.Lead and copper

2.copper and tin

3. Tin and lead

4.copper and iron

Posted Date:-2021-06-30 13:38:27


Question:
When Granite rocks get metamorphosed, they form

1.Quartzite

2.Gneiss

3.Marble

4.Slate

Posted Date:-2021-06-30 13:38:27


Question:
Which among the following is false about acids?

1.They give H+ ions in aqueous solution

2.Most acids contain hydrogen

3.They turn blue litmus red

4.They are bad conductor of electricity in aqueous solution

Posted Date:-2021-06-30 13:38:27


Question:
Which best describes the nucleus of an atom?

1.It is the densest part of the atom

2.It has neutrons

3. It has protons

4.All of the above

Posted Date:-2021-06-30 13:38:27


Question:
Which chemical is present in the cells of cork of tree which makes them impervious to gases and water

1.Cellulose

2.Suberin

3.Pectin

4.Lignin

Posted Date:-2021-06-30 13:38:27


Question:
Which element is not a part of a nitrogenous base?

1.Carbon

2.Oxygen

3.Phosphorous

4.Nitrogen

Posted Date:-2021-06-30 13:38:27


Question:
Which is a compound that contains carbon?

1.Ethane

2.Propane

3.Methane

4.All of the above

Posted Date:-2021-06-30 13:38:27


Question:
Which metal is responsible for Itai-Itai disease?

1.Cadmium

2.Nickel

3.Chromium

4.Mercury

Posted Date:-2021-06-30 13:38:27


Question:
Which of the following gases is not generated in a biogas plant?

1.H2S

2.CO2

3.CH4

4.CO

Posted Date:-2021-06-30 13:38:27


Question:
Which of the following has largest atomic radius?

 

1.Li

2.Be

3.B

4.O

Posted Date:-2021-06-30 13:38:27


Question:
Which of the following has the highest boiling point?

1.2,3-dimethylbutane

2.2-methylpentane

3.2,2-dimethylbutane

4.1,2-methylpentane

Posted Date:-2021-06-30 13:38:27


Question:
Which of the following has the highest melting and boiling point?

 

1.Lithium

2.Phosphorous

3.Carbon

4.Argon

Posted Date:-2021-06-30 13:38:27


Question:
Which of the following is an ore of Aluminium?

1.Galena

2.Cryollite

3.Cinnabar

4.Epsom Salt

Posted Date:-2021-06-30 13:38:27


Question:
Which of the following is not a type of chemical weathering?

1.Corrosion

2.Solution

3.Oxidation

4.Carbonation

Posted Date:-2021-06-30 13:38:27


Question:
which of the following molecule contains a nonpolar covalent bond?

1.Br2

2.CO2

3.CCl4

4.CO

Posted Date:-2021-06-30 13:38:27


Question:
Which of the following molecules is joined by a double covalent bond?

1.Cl2

2.O2

3.N2

4.He2

Posted Date:-2021-06-30 13:38:27


Question:
Which of the following statements is not true?

 

1.Bacteria present in the mouth produce acids by degradation of sugar and food particles remaining in the mouth.

2.When pH of the mouth is higher than 5.5. then tooth decay starts.

3. Tooth enamel made of calcium phosphate is the hardest substance in the body.

4.Using toothpaste, which are generally basic, helps neutralise the excess acid and prevent tooth decay.

Posted Date:-2021-06-30 13:38:27


Question:
Which one of the following cell organelles mainly functions as storehouse of digestive enzymes?

1.Desmosome

2.Ribosome

3.Lysosome

4.Vacuoles

Posted Date:-2021-06-30 13:38:27


Question:
Which one of the following is commonly used as an indicator to measure the exact pH?


 

1.Eosin

2.Phenolphthalein

3.Universal indicator

4.Litmus

Posted Date:-2021-06-30 13:38:27


Question:
Which one of the following is the correct relation between the Kelvin temperature (T) and the Celsius temperature (fc)?

1. These are two independent temperature scales

2.T = tc

3.T = tc - 273.15

4. T = tc + 273.15

Posted Date:-2021-06-30 13:38:27


Question:
Which process is a chemical change?

1.Burning gasoline

2.Boiling water

3.Evaporating water

4.Melting ice

Posted Date:-2021-06-30 13:38:27


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