Category: Class 10

Properties of covalent compounds

Question 1 Give few properties of covalent compounds? Properties of covalent compounds 1)Covalent compounds exist as single molecules which are mostly in gaseous state(hydrogen,oxygen, ammonia).Some...

Examples of covalent molecules

Question 1 Show covalent bonding in hydrogen molecule? Question 2 Show covalent bonding in oxygen molecule? Question 3 Show covalent bonding in nitrogen molecule? Examples...

Covalent bonding

Question 1 What is covalent bonding? Question 2 What are covalent molecules? Question 3 What is single covalent bond? Question 4 What is double covalent...

Carbon

Question 1 What is the atomic number of carbon? Question 2 What is the mass number of carbon? Question 3 What is the electronic configuration...

Transportation in plants

Question 1 Name the two conducting tissues of plants? Question 2 What is the function of transpiration? Question 3 What is transpiration? Question 4 Name...

Blood clotting and lymphatic system

Question 1 What is the other term for extracellular fluid? Question 2 What is clotting of blood? Question 3 Write a flow chart showing major...

Heart

Question 1 Name the largest artery in our body? Question 2 What is the meaning of double circulation? Question 3 Explain the double circulation of...

Life processes

Question 1 Define the term life process? Question 2 Define respiration? Question 3 Define nutrition? Question 4 Define transport? Question 5 Define excretion? Question 6...

Lenses

Question 1 Define optical centre? Question 2 Define principal focus? Question 3 Define focal length? Question 4 Define principal foci? Question 5 Define first focal...

Refraction by spherical lenses

Question 1 What is a lens? Question 2 How many type of lens are them? Question 3 What is a convex lens? Question 4 What...

Refraction of light

Question 1 Define the term refraction of light? Question 2 Draw a diagram showing the bending of a ray of light when it travels from...

Images formed by Concave lens

Question 1 What are the sign conventions for measuring the distances for spherical lens? Question 2 The image formed by concave lens is seen to be...

Images formed by convex lens

Question 1 Where should an object be placed in front of a convex lens so as to obtain image on same side of lens? Question 2 The...

Refraction through a glass slab

Question 1 What is meant by lateral shift? Question 2 The refractive index of dense flint glass is 1.65 and for alcohol it is 1.36,with...

Light-Reflection

Question 1 What are luminous objects.Give example? Question 2 What are non-luminous objects.Give example? Question 3 State the laws of reflection? Question 4 What is...

Metals

Question 1 Name one metal which has a low melting point? Question 2 Name two metals which are malleable and ductile? Question 3 Name one...

Work

Question 1 Calculate the work done in lifting 200kg of water through a vertical height of 6 m? Question 2 Define the term work? Question...

Electrical energy and power

Question 1 Define the term electrical energy? Question 2 Define the term electric  power? Question 3 What is the SI unit of power? Question 4...