Which of the following statements are incorrect?
(i) Changes in our surroundings that make us respond to them are called stimuli.
(ii) The process of getting rid of body wastes by the living organisms is known as excretion.
(iii) Breathing is a part of a process called circulation.
(iv) Aquatic animals have streamlined bodies to help them use oxygen dissolved in water.
(v) Desert plants have many leaves to reduce loss of water from the leaves through transpiration.
A(i), (iv) and (v)
B(ii) and (v)
C(iii), (iv) and
D(i), (iii) and (iv)
The c options's 3 4 and ____ is not mentioned.
Given are the figures for two types of plastics:
Which of the following statements are correct about P and Q?
I. P is a linear polymer whereas Q is a cross-linked polymer.
II. P is plastic whereas Q is a polymer.
III. P is polymer and Q is plastic
IV. A single square represents a monomer unit.
AI and II
BIII and IV
CI, II, III and IV
option 2 is confusing
Eyjafjallajokull volcano at Iceland erupted twice in the year 2010. It threw out fine, glassrich
ash into the atmosphere. It thereby disrupted air traffic across western and northern Europe and caused inconvenience to air travel. Eyjafjallajokull is an example of________.
It is still active!
Which of the following objects is incorrectly paired with the materials it is made of/from?
-------- Objects -------------- Materials
ASpectacles --------- Plastic and metal
BHammer ------------ Metal and wood
CDrilling machine -- Plastic and metal
DWatch --------------- Wood and rubber
Spectacles are not made from pure glass or pure plastic it is made of fibre which contains some plastic. Hammer is made of metal and wood. Drilling machine has its sides covered with plastic and its engine is of metal and watch is not made of these so answer is D
Plants give us foodgrains. What are the examples of such grains?
A Wheat and rice
B Maize and barley
C Gram and pulses
D All of these