|
Look at figure given below. Mark where the heat is being transferred by conduction, by convection and by radiation
|
|
0
|
2443
|
March 23, 2018
|
|
Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing
|
|
0
|
1062
|
March 23, 2018
|
|
While constructing a house in a coastal area, in which direction should the windows preferably face and why?
|
|
0
|
3094
|
March 23, 2018
|
|
At a camp site there are tents of two shades one made with black fabric and the other with white fabric
|
|
0
|
5183
|
March 23, 2018
|
|
Why is mercury used as an indicator in a thermometer?
|
|
0
|
4761
|
March 23, 2018
|
|
Give two examples each of conductors and insulators of heat
|
|
0
|
1305
|
March 23, 2018
|
|
A few sharp jerks are given to clinical thermometer before using it
|
|
0
|
17402
|
March 23, 2018
|
|
For setting curd, a small amount of curd is added to warm milk
|
|
0
|
4653
|
March 23, 2018
|
|
In the arrangements A and B shown in the figure below, pins P and Q are fixed to a metal loop and an iron rod with the help of wax
|
|
0
|
2324
|
March 23, 2018
|
|
A circular metal loop is heated at point O as shown in the figure below
|
|
0
|
10409
|
March 23, 2018
|
|
Give reasons for the following: * Light coloured cotton clothes are preferred to be worn in summers. * Shearing does not hurt a sheep. * We wear different types of clothes in different weathers.
|
|
0
|
736
|
March 23, 2018
|
|
Why it hurts when someone pulls his hair but not when he goes for a haircut? Why a cotton garment cannot keep us as warm in winter as a woollen sweater can?
|
|
0
|
6490
|
March 23, 2018
|
|
Write various steps for processing fibres into wool
|
|
0
|
36725
|
March 23, 2018
|
|
Paheli went to the market to buy sarees for her mother. She took out a thread from the edge of the two sarees shown by the shopkeeper and burnt them
|
|
0
|
9620
|
March 23, 2018
|
|
List the five steps food undergoes during digestion
|
|
0
|
3128
|
March 23, 2018
|
|
Write the function of the following: Tongue Stomach Small intestine Large intestine
|
|
0
|
1906
|
March 23, 2018
|
|
Distinguish between the following. Milk teeth and Permanent teeth Ingestion and Egestion
|
|
0
|
3313
|
March 23, 2018
|
|
What are villi?
|
|
0
|
4978
|
March 23, 2018
|
|
Write one similarity and one difference between the nutrition in Amoeba and human beings
|
|
0
|
45760
|
March 23, 2018
|
|
Draw a labelled diagram of the digestive system. Identify the following parts in the human body
|
|
0
|
21788
|
March 23, 2018
|
|
Draw a diagram of the buccal cavity and label the given types of teeth
|
|
0
|
6783
|
March 23, 2018
|
|
In which part of the human digestive system are bacteria present in the food killed?
|
|
0
|
2771
|
March 23, 2018
|
|
Name the organs involved in the digestion of food in humans
|
|
0
|
542
|
March 23, 2018
|
|
What is ORS? When is it given?
|
|
0
|
4989
|
March 23, 2018
|
|
Which part of the digestive canal is involved in
|
|
0
|
5854
|
March 23, 2018
|
|
Why do we get instant energy from glucose?
|
|
0
|
1911
|
March 23, 2018
|
|
Name the type of carbohydrate that can be digested by ruminants but not by humans
|
|
0
|
1777
|
March 23, 2018
|
|
Where is the bile produced? Which component of the food does it help to digest?
|
|
0
|
7269
|
March 23, 2018
|
|
Ruminants such as cows and buffaloes swallow their food hurriedly and then sit restfully and chew their food
|
|
0
|
3548
|
March 23, 2018
|
|
‘A’ got her gall bladder removed surgically as she was diagnosed with stones in her gall bladder. After the surgery, she faced problems in digestion of certain food items when consumed in bulk
|
|
0
|
5287
|
March 23, 2018
|