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Class 11 Chemistry Mcqs

Q:

The paintings on the walls of Ajanta and Ellora cave were based on ________

A) Varahmihir’s Brihat Samhitha B) Sushruta Samhita
C) Rasopanishada D) Charaka Samhita
 
Answer & Explanation Answer: A) Varahmihir’s Brihat Samhitha

Explanation: Varahmihir’s Brihat Samhitha is about how glutinous material is prepared and applications of it on roofs and walls of houses and temples. Ajanta and Ellora’s walls look bright for ages only because the science mentioned in this book. It contains the science of using fruits, plants, etc to paint.

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61
Q:

What does the Elixir of life of do?

A) grants immortality B) cures diseases
C) kills a person D) cause an incurable disease
 
Answer & Explanation Answer: A) grants immortality

Explanation: “Elixir” is a magical or medical potion, that is used to prolong life to an infinite extent. This is one of the main purposes of the study of chemistry in olden days. It grants the person who drinks it with eternal life or youth. It’s sometimes equated with the philosopher’s stone.

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41
Q:

Rasopanishada says how the gunpowder mixture is used in war.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: The preparation of gun powder is explained in Rasopanishada. It’s an ancient alchemy book that describes gun powder. It also describes the making of fireworks with sulfur, saltpeter, charcoal, arsenic, camphor, mercury, etc.

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58
Q:

Philosophy of changing substances into another form is called as _______

A) Physiology B) Anatomy
C) Alchemy D) Transformation
 
Answer & Explanation Answer: C) Alchemy

Explanation: Alchemy is the study of how a substance changes to other substances. It’s a very old study. In olden days, it used to be done in secrecy and was a mystery. It’s related to magic and astrology. The main thing practitioners concentrated in alchemy was turning lead into gold.

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39
Q:

What does Sushruta Samhita explain?

A) Alkanes B) Alkynes
C) Noble gases D) Alkalies importance
 
Answer & Explanation Answer: D) Alkalies importance

Explanation: Sushruta Samhita is written by Sushruta, It’s in Sanskrit and contains text about various medicinal sciences and surgical procedures. It’s an old ancient book of India. It has great historical importance as it contains the detailed procedures and the proper instruments needed.

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47
Q:

Which of the following is a chemical change?

A) Conversion of water to ice B) Rusting of iron
C) Crumpling a sheet of aluminum foil D) Casting silver
 
Answer & Explanation Answer: B) Rusting of iron

Explanation: In rusting of iron, the oxidation state of iron changes, but in the conversion of water to ice, crumpling a sheet of aluminum foil and casting silver the chemical state remains same whereas the physical state changes. When iron is exposed to oxygen, iron oxide formation takes place.

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39
Q:

What are the basic constituents of matter?

A) Atoms & Molecules B) Atoms & Moles
C) Molecules & Ions D) Nuclei & Ions
 
Answer & Explanation Answer: A) Atoms & Molecules

Explanation: Atoms & Molecules are the basic constituents because the matter is made up of molecules and a molecule is made of atoms. Ions are either positively or negatively charged particles. Nuclei are the central part of atoms. When seen in the microscopic level, atoms are the basic unit of matter.

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78
Q:

Patients suffering from AIDS can be helped using which of the following drugs?

A) Cisplatin B) AZT (Azidothymidine)
C) Taxol D) Codeine
 
Answer & Explanation Answer: B) AZT (Azidothymidine)

Explanation: The drug AZT is used for preventing or treating AIDS, while cisplatin & taxol are for cancer and codeine is a sort of painkiller. The drug AZT is also known as Zidovudine. This drug AZT is an antiretroviral drug. It’s used along with other drugs as a combination.

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