Select the correct statement about the given figure.
AIt helps in reducing soil erosion by using non-arable land.
BIt helps in reducing soil erosion by water.
CIt helps in reducing soil erosion by overgrazing.
DIt helps in reducing soil erosion by deforestation.
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Which of the following is the correct difference between weaving and knitting?
A Weaving is done with machine while knitting is done with hand only.
B Weaving uses two sets of yarn while knitting involves only one yarn.
C Weaving is done for silk only while knitting is done for wool only.
D All of these
Refer to the given paragraph and select the correct option regarding X, Y and Z.
The process of making yarn from fibres is called X. Yarn are used for making fabrics. Two main processes are used to make fabrics from yarn. In process Y, two sets of yarn are arranged together to make a fabric while in process Z single yarn is used to make a piece of fabric.
A X : Knitting; Y : Spinning; Z : Weaving
B X : Spinning; Y : Weaving; Z : Knitting
C X : Weaving; Y : Spinning; Z : Knitting
D X : Spinning; Y : Knitting; Z : Weaving
Refer to the given dichotomous key and select the correct option.
I. (A) It is categorised as energy giving food. – Go to II
(B) It is categorised as protective food. – Go to III
II. (A) It is soluble in water. –
(B) It is insoluble in water. –
III. (A) It is needed for clotting of blood. –
(B) It helps in formation of haemoglobin. –
A Q could be glucose which is instant source of energy.
B Deficiency of S causes anaemia characterised by pale body colour, body fatigue etc.
C R causes osteoporosis in adults while S causes goitre in adults.
D P occurs in the cell wall of plant cells and in fibres.
A child is suffering from a deficiency disease. He shows the following symptoms:
(i) Swelling of ankle, feet and belly
(iii) Scaly skin
(iv) Mental retardation
Identify the deficiency disease and the deficient nutrient in the child’s body.
|Deficiency disease||Deficient nutrient|
Position - time graph of an object is shown in the figure.
Object moves with constant speed for path______.
If '-' stands for 'division', '+' stands for 'multiplication','÷' stands for 'subtraction' and '×' stands for 'addition', then which one of the following options is incorrect?
A2 × 5 × 6 + 3 ÷ 2 = 23
B2 × 5 + 6 - 3 ÷ 2 = 10
C2 - 5 ÷ 6 × 3 - 2 = 23
D2 ÷ 5 + 6 - 3 + 2 = -18