Study the given diagram showing part of the Solar System and answer the following questions.
The orbit marked as 'X' is of ______.
A few changes are given as follows:
(i) Spinning of top
(ii) Occurrence of day and night
(iii) Formation of curd from milk
(iv) Curdling of milk by adding lemon juice
(v) Digestion of food
(vi) Burning of paper
Which of the following represents the correct classification of these changes?
A(i), (iv) and (vi) are physical irreversible changes while (ii), (iii), (iv) and (v) are chemical changes.
B(i), (iv) and (vi) are fast changes while (ii), (iii) and (v) are slow changes.
C(ii), (iv), (v) and (vi) are desirable changes while (i) and (iii) are undesirable changes.
DNone of these
Study the given flow chart carefully.
Cotton and silk are represented by the letters ______ and ______ respectively.
A P, Q
B Q, R
C Q, S
D R, S
R is animal. Natural fibre which we don't get from plant and animal is silk, i.e from insect, which means S is insect.
Which of the following statements is/are correct?
I. The excretory system in humans consist of a pair of kidneys, ureter, urinary bladder, a pair of urethras and urinary opening.
II. In lower animals such as Hydra waste product is excreted by the process of diffusion through the body surface.
III. The urine passes from the kidneys through urethra into urinary bladder.
IV. Urine consists of water, urea and other waste products and urea is breakdown product of proteins.
AI and IV
BII and IV
CII and III
DI and III
i even do think that the 1st option is correct