Tag: laboratory equipments

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Questions Related to laboratory equipments

Multiple choice common laboratory equipments common laboratory apparatus and equipments laboratory equipments know about some common gases chemistry

Which of the following are correct regarding glass tubes?

  1. They are hollow pieces of various glass

  2. They are used to mix solid substances

  3. Can be cut into pieces of desirable purpose

  4. Interacts with the solution
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

Glass tubed or glass tubing are hollow pieces of various glass types with a large variety of applications which are laboratory glassware. They can be cut into various sizes.

Glass is a non-crystalline amorphous solid that is often transparent. Since it is non-crystalline it is brittle in nature. Also, it does not react with chemicals.

Multiple choice common laboratory equipments common laboratory apparatus and equipments laboratory equipments know about some common gases chemistry

A glass rod is :

  1. an equipment used to mix chemicals and liquid for laboratory purposes

  2. an equipment used to mix solids

  3. an equipment usedto mix gases

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A glass rod, stirring rod or stir rod is a piece of laboratory equipment used to mix chemicals and liquids for laboratory purposes. They are usually made of solid glass, about the thickness and slightly longer than a drinking straw, with rounded ends.

Multiple choice common laboratory equipments common laboratory apparatus and equipments laboratory equipments know about some common gases chemistry

Which of the following are required to cut a glass tube?

  1. Bunsen Burner

  2. Triangular file

  3. Scissor
  4. Only $A$ and $B$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A triangular file is any file that has a triangular cross section. The file has three tapered sides, which are used to file the internal surfaces of objects with acute angles.

A Bunsen burner, named after Robert Bunsen, is a common piece of laboratory equipment that produces a single open gas flame, which is used for heating, sterilization, and combustion.

Multiple choice common laboratory equipments common laboratory apparatus and equipments laboratory equipments know about some common gases chemistry

Two identical containers are filled with gas. The first container is filled neon and the second with krypton. Both containers are placed at NTP conditions.
Which of the following factors will NOT be equal for the two containers?

  1. Number of particles

  2. Kinetic Energy

  3. Pressure

  4. Masses

  5. Number of moles
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Two identical containers are when filled with gas, one with $Ne$ and one with $Kr$ and are then placed at $NTP$. They will be present at same conditions of temperature and pressure.

Also, their volume will be same, since they occupy identical containers but their number of particles would be different.  

Multiple choice common laboratory equipments common laboratory apparatus and equipments laboratory equipments know about some common gases chemistry

Which is the best definiion of a glass rod ?

  1. It is an equipment used in Chemistry laboratory to mix chemicals and liquids

  2. It is an equipment used in Physical laboratory to mix solids and gases

  3. It is an equipment used in Biology laboratory to separate mixures

  4. It is an equipment used at our home for cleaning purposes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A glass rod, stirring rod or stir rod is a piece of laboratory equipment used to mix chemicals and liquids for laboratory purposes. It is generally found in Chemical laboratory as glass ususally does not react with chemicals. They are usually made of solid glass, about the thickness and slightly longer than a drinking straw, with rounded ends.

Multiple choice common laboratory equipments common laboratory apparatus and equipments laboratory equipments know about some common gases chemistry

What does glass rod made up of :

  1. metal silicates

  2. lime

  3. silicon dioxide

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Silicon dioxide is usually the main constituent of glass. Other components such as lime and metl silicates are used in making of glass. 

Of the many silica-based glasses that exist, ordinary glass is formed from a specific type called soda-lime glass, composed of approximately 75% silicon dioxide, sodium oxide from sodium carbonate, calcium oxide, also called lime, and several minor additives.

Multiple choice common laboratory equipments common laboratory apparatus and equipments laboratory equipments know about some common gases chemistry

What does a glass rod made up of ?

  1. Borosilicates

  2. Pyrex

  3. Polypropylene

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Of the many silica-based glasses that exist, ordinary glass is formed from a specific type called soda-lime glass, composed of approximately 75% silicon dioxide, sodium oxide from sodium carbonate, calcium oxide, also called lime, and several minor additives.

Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents.

Pyrex is a brand for a line of clear, low-thermal-expansion borosilicate glass used for laboratory glassware and kitchenware.

Polypropylene is also used as a component used in production of gas.

Multiple choice common laboratory equipments common laboratory apparatus and equipments laboratory equipments know about some common gases chemistry

Which of the following materials are used while bending a glass tube?

  1. Bunsen burner

  2. Glazed file
  3. Both $A$ and $B$

  4. Scissor
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bending a glass tube requires heating it to a pliable state, which is achieved using a Bunsen burner. A glazed file is used to cut the glass, not to bend it.