NCERT Class 10 Science Quiz: Chemical Reactions and Equations

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12 Questions

Which element has the highest electronegativity?

Fluorine

How many valence electrons does a chlorine (Cl) atom have?

17

Where does photosynthesis primarily take place?

Leaves

What is the function of auxins in plants?

Stem elongation

In sexual reproduction, where do offspring inherit genes from?

Both parents

Which system in the human body is responsible for removing waste products through the kidneys?

Kidneys

Which of the following is an example of a chemical change?

Rusting of iron

The balanced chemical equation for the reaction between sodium hydroxide and hydrochloric acid is:

NaOH + HCl → NaCl + H2O

Which of the following has a pH value less than 7?

Bleach

An example of a metal is:

Mercury

What is the main difference between metals and non-metals?

Metals can conduct electricity, while non-metals cannot.

Diamond is:

An allotrope of carbon

Test your knowledge with 20 multiple-choice questions based on key concepts covered in Chapter 1 - Chemical Reactions and Equations of NCERT Class 10 Science textbook. Questions cover topics such as chemical changes, balanced chemical equations, and more.

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