Questions

Q:

Ketchup stored in a tin can may lead to chemical contamination.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The given statement is True.


Ketchup is acidic, having a pH of 3.9. The acidic component, acetic acid, will react with the metal tin. This reaction will result in a metal acetate that will contaminate the ketchup.


 


Hence, The acetic acid in the ketchup will react with the metal tin, forming a metal acetate that will pass into the ketchup which leads to its contamination.

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Subject: Chemistry
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Q:

What is a Solution and what are the two parts of a solution?

Answer

A solution is a homogeneous type of mixture of two or more substances.


A solution has two parts::


1. A solute and


2. A solvent.


 


The solute is the substance that dissolves, and the solvent is the majority of the solution.

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Subject: Chemistry Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

Anything that has Mass and takes up Space-

A) System B) Matter
C) Energy D) Weight
 
Answer & Explanation Answer: B) Matter

Explanation:

Anything that has Mass and takes up Space is called Matter.

 

Matter has some mass and occupies some space. Mass means the amount of matter in an object. Space occupied by an object is called its Volume.

 

The Study of Matter and and how matter changes is called Chemistry.

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Filed Under: General Science
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Q:

Which of these provides your body with energy?

A) Carbohydrates B) Fats
C) Vitamins D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Nutrients are the substances in food that provide the raw materials and energy the body needs to carry out all its essential processes.

There are six groups of nutrients:

1. Carbohydrates.

2. Fats.

3. Proteins.

4. Vitamins.

5. Minerals.

6. Water.

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Filed Under: General Science
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Q:

In which year was the first solid state integrated circuit demonstrated?

A) 1970s B) 1960s
C) 1950s D) 1980s
 
Answer & Explanation Answer: C) 1950s

Explanation:
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Filed Under: Inventions

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Q:

The primary effect on climate of a volcanic eruption depends on______

A) the quantity of lava produced B) how hot the eruptive products are
C) the amount of water vapour produced D) none of the above
 
Answer & Explanation Answer: D) none of the above

Explanation:
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Filed Under: World Geography

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Q:

How many years it takes for Pluto to Orbit the Sun?

A) 76 yrs B) 144 yrs
C) 198 yrs D) 248 yrs
 
Answer & Explanation Answer: D) 248 yrs

Explanation:

It takes 248 yrs for Pluto to orbit the Sun.

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Filed Under: General Science
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Q:

In the making of jewels, gold is usually mixed with 

A) zinc B) tin
C) copper D) aluminium
 
Answer & Explanation Answer: C) copper

Explanation:

In making jewels, gold is usually mixed with copper to make it little hard.

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Filed Under: Chemistry

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