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


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


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

1.Physical Change

2.Chemical Change

3.Rusting

4.Galvanisation


Question:
Adding which substance gives blue colour to glass?

1.Manganese oxide

2.Cobalt oxide

3.Chromium oxide

4. Iron oxide


Question:
Alkali metals can

1.be highly unstable at room temperature

2.vaporize at room temperature

3.easily gain electrons

4.easily lose electrons


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


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

1.Isobars

2.Isotopes

3.Isotones

4.Isomers


Question:
Atoms of the same element can differ in

1.Atomic number

2.Atomic mass

3.electrons

4.None of the above


Question:
Barbituric Acid was synthesized in 1864 by

1.Adolf von Baeyer

2.Marie Curie

3.Mendeleev

4.John Dalton


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

 

1.greenhouse effect

2.ozonification

3.oven phenomenon

4.sunburn


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


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


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

 

1.2, 4

2.2, 6

3.4, 7

4.3, 8


Question:
In general the largest component of bog soils is

1.organic matter

2.water

3. living organisms

4.air


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


Question:
Monazite is an ore of

1.Platinum

2.Radium

3.Uranium

4.Lanthanum


Question:
Non metal found in liquid state?

1.Chlorine

2.Bromine

3.Fluorine

4.Iodine


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


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


Question:
Synthetic detergents are prepared from

1.potassium salts of higher fatty­acids

2.sodium salts of higher fatty­acids

3.hydrocarbons of petroleum

4. glycerides


Question:
The chemical makeup of a rock is

1.Nutrients

2.Minerals

3.Metals

4.Water


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


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


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


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


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

 

1.Osmosis

2.Sedimentation

3.Precipitation

4.Transpiration


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


Question:
Turquoise is an ore/mineral of

1.Copper

2.Manganese

3.Mercury

4.Tin


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


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


Question:
When Granite rocks get metamorphosed, they form

1.Quartzite

2.Gneiss

3.Marble

4.Slate


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


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


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


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

1.Carbon

2.Oxygen

3.Phosphorous

4.Nitrogen


Question:
Which is a compound that contains carbon?

1.Ethane

2.Propane

3.Methane

4.All of the above


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

1.Cadmium

2.Nickel

3.Chromium

4.Mercury


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

1.H2S

2.CO2

3.CH4

4.CO


Question:
Which of the following has largest atomic radius?

 

1.Li

2.Be

3.B

4.O


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


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

 

1.Lithium

2.Phosphorous

3.Carbon

4.Argon


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

1.Galena

2.Cryollite

3.Cinnabar

4.Epsom Salt


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

1.Corrosion

2.Solution

3.Oxidation

4.Carbonation


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

1.Br2

2.CO2

3.CCl4

4.CO


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

1.Cl2

2.O2

3.N2

4.He2


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.


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

1.Desmosome

2.Ribosome

3.Lysosome

4.Vacuoles


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


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


Question:
Which process is a chemical change?

1.Burning gasoline

2.Boiling water

3.Evaporating water

4.Melting ice


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