A solid transparent sphere has a small opaque dot at its centre. When observed from outside, the apparent position of the dot will be
A Closer to the eye than its actual position.
B The same as its actual position.
C Farther away from the eye than its actual position.
D None of these.
Which of the items above will allow you to see around a corner from where you are standing?
A (i) only
B (iii) only
C (i) and (ii)
D (i) and (iii)
The given graph shows the temperature of water as it is heated. The period from X to Y shows ______.
A Melting point
B Water gain
C Heat loss
D Boiling point
Ans 2: (Master Answer)
The correct answer is D.
The given graph shows that the temperature of water is not increasing with time from period ‘X’ to ‘Y’, which shows that drum. water has attained its boiling point (100°C). On reaching boiling point, the temperature of water does not increase further and water converts into vapour.
Shruti took a white carnation flower and split its stalk halfway along the length and arranged a setup as shown in the given figure. After some time, she observed that half of the petals turned blue and half turned red. A section through stem also showed blue and red coloured areas.
What can she infer from this experiment?
A Stem conducts water to all plant parts.
B Stem has localised structures for conduction of water.
C Stem conducts solutes alongwith water.
D All of these
give this kind of more questions please
In a certain language, 'PERSON' is coded as 'ENOPRS'. How will 'OLYMPIAD' be coded in same language?
The given statements which summarise the process of digestion are not given in a correct sequence. Arrange them in sequence and select the correct option.
P. Absorption of water
Q. Churning of food and addition of digestive juices
R. Mixing with saliva
S. Complete digestion of food and absorption of nutrients
T. Expulsion of faeces
A R → Q → S → P → T
B R → S → Q → P → T
C R → Q → P → S → T
D R → P → Q → S → T
Ans 1: (Master Answer)
The correct answer is A.
When food is taken in the mouth, it is chewed and gets mixed with saliva secreted in the mouth (R). Once swallowed, the food moves through the oesophagus into the stomach where churning and digestion of food with digestive juices occurs (Q). The semi-digested food then moves into the small intestine where complete digestion as well as absorption of nutrients occur (S). From the undigested food, the water is absorbed in the large intestine (P). After this, the undigested food is expelled through the anus in the form of faeces (T).
In a research, it is proved that in old age one should take more quantity of proteins in diet than any other group of food. Which of the following justifies this?
A Proteins help to repair and build muscles. In old age, muscle growth increases, hence protein intake should be more.
B Proteins help to repair and build muscles. In old age, muscles become weak, hence protein intake should be more.
C Proteins give energy to the body. In old age, the body needs more energy to work, hence protein intake should be more.
D Proteins give energy to the body. In old age, the body uses stored fat hence, protein intake should be more.