NCERT Exemplar solutions for Science [English] Class 6 chapter 4 - Sorting Materials and Groups [Latest edition]

An iron nail is kept in each of the following liquids. In which case would it lose its shine and appear dull?

Pick one material from the following which is completely soluble in water.

You are provided with the following materials

1. magnifying glass
2. mirror
3. stainless steel plate
4. glass tumbler

Which of the above materials will you identify as transparent?

Boojho found a bag containing the following materials.

1. Mirror
2. Paper stained with oil
3. Magnet
4. Glass spectacles

Help Boojho in finding out the material(s) which is/ are opaque.

While doing an activity in class, the teacher asked Paheli to .handover a translucent material. Which among the following materials will Paheli pick and give her teacher?

Which pair of substances among the following would float in a tumbler half filled with water?

Which among the following are commonly used for making a safety pin?

Which of the following materials is not lustrous?

Which of the following statements is not true?

Find the odd one out from the following.

Which type of the following materials is used for making the front glass (wind screen) of a car?

lt was Paheli’s birthday. Her grandmother gave her two gifts made of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?

Mixtures of red chilli powder in water, butter in water, petrol in water, and honey in water were given to Radha, Sudha, Sofia and Raveena, respectively. Whose mixture is in solution form?

On a bright sunny day, Shikha was playing hide and seek with her brother. She hid herself behind a glass door. Do you think her brother will be able to locate her. If yes, why? If no, why not?

Take a small cotton ball and place it in a tumbler/ bowl filled with water. Observe it for atleast 10 minutes. Will it float or sink in water and why?

Which among the following materials would you identify as soft materials and why?

Ice, rubber band, leaf, eraser, pencil, pearl, a piece of wooden board, cooked rice, pulses and fresh chapati.

You are provided with the following materials – turmeric, honey, mustard oil, water, glucose, rice flour, groundnut oil.

Make any three pairs of substances where one substance is soluble in the other and any three pairs of substances where one substance remains insoluble in the other substances.

During summer holidays, a group of children collected a lump of salt, green grass, broken glass piece, a small thermocol box, pen, iron nail, glass marbles, hair, naphthalene ball, a piece of sugar candy (mishri) and tried to group them on the basis of properties given in table below. Help them in filling the table.

Arrange the jumbled words to arrive at the appropriate name of material and also write two uses of it.

milaunuim

Arrange the jumbled words to arrive at the appropriate name of material and also write two uses of it.

tcaslpi

Arrange the jumbled words to arrive at the appropriate name of material and also write two uses of it.

soekrnee

Arrange the jumbled words to arrive at the appropriate name of material and also write two uses of it.

gavnier

Match the objects given in Column I with the materials given in Column II.

Pick five objects from the word box given as Figure which are opaque and would sink in water.

Chalk, iron nail, wood, aluminium, candle, cotton usually look different from each other. Give some properties by which we can prove that these materials are different.

Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?

Differentiate among opaque, translucent and transparent materials, giving one example of each.

Sugar, salt, mustard oil, sand, sawdust, honey, chalk powder, petals of flower, soil, copper sulphate crystals, glucose, wheat flour are some substances given to Paheli. She wants to know whether these substances are soluble in water or not. Help her in identifying soluble and insoluble substances in water.