A bus travels 54 km in 90 minutes. The speed of the bus is
  • 0. 6 m/s
  • 10 m/s
  • 5. 4 m/s
  • 3. 6 m/s
If we denote speed by S, distance by D and time by T, the relationship between these quantities is
  • S = D T
  • T = \(\frac{S}{D}\)
  • S = \(\frac{1}{T}\) × D
  • S = \(\frac{T}{D}\)
Observe the figure given below:
  • A to B and back to A
  • O to A, A to B and B to A
  • B to A, A to B and B to O
  • A to B
Nearly all the clocks make use of
  • straight line motion
  • periodic motion
  • random motion
  • circular motion
A simple pendulum takes 42 sec. to complete 20 oscillations. What is its time period?
  • 2. 1 s
  • 4. 2 s
  • 21 s
  • 8. 40 s
Time period of a simple pendulum depends upon its
  • weight of bob
  • length
  • both (a) and (b)
  • None of these
Which of the following cannot be used for measurement of time?
  • A leaking tap
  • Simple pendulum
  • Shadow of an object during the day
  • Blinking of eyes
On which axis is dependent variable represented?
  • x-axis
  • y-axis
  • On any axis
  • Depends on the data
The correct symbol to represent the speed of an object is:
  • 5 m/s
  • 5 mp
  • 5 m/s
  • 5 s/m
Boojho walks to his school which is at a distance of 3 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 minutes. His average speed in km/h is
  • 8. 3
  • 7. 2
  • 5
  • 3. 6

When fruit is formed, the ovule turns into

  • seeds
  • fruit
  • female sex cells
  • male sex cells

Mostly the colors of the flowers pollinated by birds are

  • red, orange or yellow
  • green, blue or purple
  • pink, white or black
  • red, purple or white

When embryo starts to grow, the endosperm provides it with

  • water
  • oxygen
  • carbon dioxide
  • food

In some plants, if a branch of a plant is cut and planted in the soil, roots will grow and form a new plant, this reproduction is known as

  • tuber
  • rooting branch
  • cutting
  • grafting

Mostly the color of petals is

  • bright
  • dull
  • dark
  • light

Tiny root hairs grown on the root of the seed

  • absorbs water and oxygen
  • absorbs water only
  • absorbs mineral salts only
  • absorbs water and mineral salts

Each ovule contains

  • female sex cells
  • male sex cells
  • bisexual cells
  • transsexual cells

If a piece of onion is planted in a soil, it will turn into a plant with multiple onions under it, this asexual reproduction is called

  • tuber
  • runner
  • rooting branch
  • bulb and corms

The pollen grains in anther are

  • female sex cells
  • male sex cells
  • bisexual cells
  • transsexual cells

The food store comes from

  • soil
  • air
  • water
  • parent plant

The flowers which are pollinated by means of wind have

  • bright colored petals and attractive scent
  • dull colored petals and attractive scent
  • bright colored petals and bad small
  • dull colored petals and no smell

Another phrase used for 'asexual reproduction' is

  • anti sexual reproduction
  • unisexual reproduction
  • anti sexual propagation
  • vegetative propagation

'Stigma' of insect pollinated flowers is

  • sticky
  • feathery
  • plain
  • dry

The petals have 'nectar' in their

  • bottom
  • top
  • base
  • tip

The male reproductive part of a flower is known as

  • carpel
  • stamen
  • petal
  • sepal

Most of the plants reproduce through

  • buds
  • crafting
  • seeds
  • sperm

The pollens from plants are mainly carried by two means, i.e

  • insects and birds
  • wind and birds
  • insects and wind
  • animals and insects

The female reproductive part of a flower is known as

  • carpel
  • stamen
  • petal
  • sepal

The tip of the carpel is known as

  • stigma
  • style
  • filament
  • anther

Inside every seed, there is a miniature plant known as

  • zygote
  • embryo
  • ovule
  • endosperm
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