Write true or false. If false change the statement so that it is true.
(a) Actin is present in thin filament
(b) H-zone of striated muscle fibre represents both thick and thin filaments.
(c) Human skeleton has 206 bones.
(d) There are 11 pairs of ribs in man.
(e) Sternum is present on the ventral side of the body.
Of the 288 persons working in a company, 112 are men and the
remaining are women. Find the ratio of the number of
(a) men to that of women.
(b) men to the total number of persons.
(c) women to the total number of persons.
Which one of the following is the most important factor in the interaction
between people and environment?
(a)
human intelligence
(c)
technology
(b)
people’s perception
(d)
human brotherhood
Ramesh earns Rs 28000 per month. His wife Rama earns Rs 36000 per month. Find the ratio of
(a) Ramesh’s earnings to their total earnings
(b) Rama’s earnings to their total earnings.
In a year, Ravi earns Rs 360000 and paid Rs 24000 as income tax. Find the ratio of his
(a) income to income tax.
(b) income tax to income after paying income tax.
Sex ratio is defined as the number of females per 1000 males in the population. Find the sex ratio if there are 3732 females per 4000 males in a town.
The number of milk teeth in human beings is 20 and the number of
permanent teeth is 32. Find the ratio of the number of milk teeth to
the number of permanent teeth.
A line segment 56cm long is to be divided into two parts in the ratio of 2 : 5. Find the length of each part
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