User Forum

Name of some fibres can be obtained by using the letters given in the following box.

Which of the following objects CANNOT be made using only these fibres?

ARugs
BCurtains
CRaincoats
DBoth A and C

Which of these statements is INCORRECT?

ACranes used to lift loads use pulleys.
BA wedge is made up of two inclined planes.
CFork is an example of lever.
DScrew is used to lower and raise things.

Consider the following statements regarding carbon dioxide.

I .It is produced when an object is burnt.

II .It is consumed by living organisms during respiration.

III . It is released by green plants during photosynthesis.

Among the given statements,

Aonly I is incorrect
Bonly III is incorrect
Cboth I and II are incorrect
Dboth II and III are incorrect

Which is the best representation of an insect?

(A)

(B)

(C)

Which of the following activities is/are useful for the environment?

(i) Composting leaves

(ii) Recycling glass and paper products

(iii) Fertilizing a lawn garden every week

(A) (iii) only

(B) (i) & (ii)

(C) (ii) & (iii)

Which out of the following tools can be used to measure quantity of water?

A
B
C
D

Which of the following is correct regarding the impact of deforestation?
(i) Plants of medicinal values found in the forest are lost.
(ii) Fewer trees are left around to hold the soil together, resulting in soil erosion.
(iii) Global warming occurs as there are fewer trees to absorb carbon dioxide.
(iv) The risk of an epidemic outbreak increases, resulting in the death of animals living in forests.

A (i) and (iv)
B (iii) and (iv)
C (i), (ii) and (iii)
D (i), (ii) and (iv)

Select the correct option for energy changes taking place with respect to given figure.

A Light energy → Mechanical energy → Kinetic energy
B Light energy → Chemical energy → Kinetic energy
C Chemical energy → Light energy → Kinetic energy
D Mechanical energy → Kinetic energy → Light energy

Which of the following statements are correct?

(i) Safety means being careful and avoiding accidents only when walking on the road.

(ii) There are rules and signs for safety of people on the ship.

(iii) We must use footpath for walking and cyclists must keep to the left.

(iv) We must cross the road as we like anywhere and everywhere.

(A) (i), (ii), & (iii)

(B) (ii) & (iii)

(C) (iii) & (iv)

Study the given diagram carefully. The number represented by (?) is _______.

(A) 24

(B) 16

(C) 64