science test class 10

Define ionization energy.

What is a redox reaction?

The reaction of a metal with oxygen to form a metal oxide is an example of:

In a chemical equation, the coefficients are used to:

What is centripetal force?

What is a catalyst?

What is the primary cause of Earth's gravitational field?

The reaction of an acid with a base to form salt and water is called:

What is the term for a reaction that absorbs heat from its surroundings?

Balance the equation: H₂ + O₂ → H₂O.

Which planet is known as the Red Planet?

Which organ in the human body is responsible for pumping blood?

Which element is the most abundant in the Earth's crust?

What is the chemical symbol for gold?

What is the process of converting liquid into gas at any temperature called?

What is the law of reflection of light?

What is the chemical name of washing soda?

What is the term for the resistance of a liquid to flow?

What is the term for the device used to convert mechanical energy into electrical energy?

What is the boiling point of ethanol?

Which gas is evolved when calcium carbonate reacts with dilute hydrochloric acid?

What is the SI unit of work?

Which gas is commonly known as "laughing gas"?

Which planet in the solar system is known as the "Evening Star"?

What is the pH value of acidic solutions?

What is the term for a chemical reaction in which heat is released?

What is the formula of common salt?

What is the SI unit of energy?

Which acid is present in lemon?

What is the chemical formula of ethanol?

What is the device used to measure atmospheric humidity?

Which blood group is known as the universal donor?

What is the basic unit of heredity?

What is the term for the movement of particles from high concentration to low concentration?

What is the formula for calculating speed?

What is the outermost layer of the Earth called?

What is the term for substances that increase the rate of chemical reactions?

What is the mode of nutrition in fungi?

Which part of the brain controls balance and coordination?

Which organelle is known as the powerhouse of the cell?

What is the formula of acetic acid?

What is the main function of red blood cells?

What is the term for the natural process of converting nitrogen gas into compounds usable by plants?

What is the product formed when magnesium reacts with oxygen?

Which gas is required for combustion to occur?

What is the term for the energy possessed by a body due to its motion?

What is the pH value of pure water?

Which part of the human body contains the smallest bones?

Which acid is commonly used in car batteries?

Which process is used for the purification of seawater?

Which is the longest bone in the human body?

What is the formula of sodium hydroxide?

What is the term for the splitting of a nucleus into two smaller nuclei, releasing energy?

What is the chemical formula of hydrochloric acid?

What is the common name of calcium carbonate?

What is the main function of hemoglobin in the blood?

What is the pH value of a basic solution?

Which vitamin is essential for healthy eyes?

What is the role of chlorophyll in photosynthesis?

Which planet is known as the "Red Planet"?

What is the process of conversion of sugar into alcohol called?

What is the name of the process in which water changes directly into vapor without becoming a liquid?

What is the main source of energy for the water cycle?

Which type of energy is stored in a stretched rubber band?

What is the unit of resistance?

Which organ in the human body is responsible for filtering blood?

What is the phenomenon responsible for the blue color of the sky?

What is the term for the smallest particle of an element?

What is the mode of reproduction in amoeba?

Which component of blood helps in clotting?

Which gas is a major component of biogas?

What is the chemical name of vinegar?

What is the boiling point of water at sea level?

What is the main component of a cell wall in plants?

What is the natural satellite of Earth?

What is the chemical name of common salt?

What is the type of bond formed by the sharing of electrons?

What is the valency of nitrogen in NH₃?

What is the primary source of energy on Earth?

What is the term for the amount of matter in an object?