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?Glass tumbler Mirror Muslin cloth Aluminium foil
Correct Answer: (c) Muslin cloth
Explanation: Glass tumbler is transparent material as we can see clearly through it. Mirror and aluminum foil are opaque. Muslin cloth is translucent since we can see through it though not clearly.
Related Articles Paheli asked for a glass of water from Boojho. He gave her a glass of ice cold water. Paheli observed some water droplets on the outer surface of the glass and asked Boojho how these droplets of water were formed. Which of the following should be Boojho’s answer?(a) Evaporation of water from the glass.(b) Water that seeped out from the glass.(c) Evaporation of atmospheric water vapour.(d) Condensation of atmospheric water vapour.
The following is an answer given by Boojho to a question asked by his teacher: Cotton, wool, silk and jute are classified as natural fibres whereas nylon and polyester are classified as synthetic fibres”. Can you tell what question the teacher has asked?
The Tiny Teacher
Paheli wants to present her friend a gift made of plant-fibre. Which out of the following will she select?Jute bagWoollen shawlSilk sareeNylon scarf
Gurmit wanted to perform Activity 16.8 using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teacher’s advise?
Give an activity to understand the implications of Rutherford’s scattering experiment by a gold foil.
Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli are, respectively$(a)$. plane mirror and concave mirror.$(b)$. concave mirror and convex mirror.$(c)$. plane mirror and convex mirror.$(d)$. convex mirror and plane mirror.
To keep her soup warm Paheli wrapped the container in which it was kept with a woollen cloth. Can she apply the same method to keep a glass of cold drink cool? Give reason for your answer.
Differentiate among opaque, translucent and transparent materials, giving one example of each.
Paheli is suffering from indigestion due to acidity. Is it advisable to give her orange juice in this situation and why?
While doing drill Rohan was asked to about-turn. After two, minutes he was again asked to about-turn. How many degrees did Rohan turn in the activity?
Paheli was feeling thirsty but there was only a pot of water at home which was muddy and unfit for drinking. How do you think Paheli would have made this water fit for drinking if the following materials were available to her.[Alum, tub, muslin cloth, gas stove, thread, pan and lid.]
Out of the following materials:cotton, nylon, terylene, wool, Pet, acrylic(a) which materials are polyesters?(b) which materials is a polyamide?(c) which material is used as a substitute for wool?(d) which material is used as a substitute for glass?
Paheli and Boojho measured their body temperature. Paheli found her’s to be $98.6^{\circ}\ F$ and Boojho recorded $37^{\circ}\ C$. Which of the following statement is true?$(a)$. Paheli has a higher body temperature than Boojho$(b)$. Paheli has a lower body temperature than Boojho$(c)$. Both have normal body temperature$(d)$. Both are suffering from fever
Pick one material from the following which is completely soluble in water.Chalk powderTea leavesGlucoseSawdust
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