Study the following table :
Which is best suited as domestic fuel?
(A) A
(B) B
(C) C
(D) D
Species restricted to a particular area are referred to as
(A) Endangered species
(B) Extinct species
(C) Endemic species
(D) Migratory species
Species that are restricted to a particular geographical area are called endemic species.
Metal ‘X’ displaces metal ‘Y’ from its salt solution but is not able to displace metal ‘Z’ from its salt solution. Identify the most reactive metal.
(A) X
(B) Y
(C) Z
(D) Cannot be determined.
Metal 'X' displaces metal 'Y' from its salt solution, so 'X' is more reactive than 'Y'. Metal 'X' Can not displace metal 'Z' from its salt solution, so 'Z' is more reactive than 'X'
Identify the correct statement from among the following :
(A) The lower the frequency of the vibration, higher is the pitch.
(B) The loudness of sound is determined by the frequency of vibration.
(C) Sound cannot travel through vacuum.
(D) Pitch of sound is determined by its amplitude.
In order to slide a huge box lying on the ground in her room, Reshma should apply a force which is greater than which of the following forces?
(A) Static friction
(B) Gravitational force
(C) Normal force
(D) Muscular force
So, In order to slide a huge box lying on the ground in her room, Reshma should apply a force greater than the Static friction.
Light rays from an object fall on a surface and get reflected in a completely diffused manner. What can you say about the nature of the image of the object?
(A) It will be virtual and of same size.
(B) It will be real and enlarged.
(C) It will be virtual and enlarged.
(D) No image will be formed.
Light rays from an object fall on a surface and get reflected in a completely diffused manner. What can you say about the nature of image of the object ? It will be virtual and of same size.
Which of the following represents the correct matching set?
(a) helps in the movement of the body by contraction and relaxation. (I) Cartilage
(b) Hard structure which forms the skeleton (ii) Muscles
(c) Part of the skeleton which can be bent (iii) Rib-cage
(d) Joins the chest bone and backbone together to form an enclosure (iv) Bones
(A) (1) (a) (i), (b) (iii), (c) (ii), (d) (iv)
(B) (a) (ii), (b) (iv), (c) (i), (d) (iii)
(C) (a) (iii), (b) (ii), (c) (i), (d) (iv)
(D) (a) (iv), (b) (iii), (c) (ii), (d) (i)
Deficiency of which of these vitamin causes anaemia in humans?
(A) Vitamin D
(B) Vitamin B
(C) Vitamin A
(D) Vitamin B12
Symptoms of vitamin B12 deficiency or folate deficiency anemia develop slowly and are similar to those of other types of anemia, such as fatigue, weakness, and pale skin. Vitamin B12 deficiency can also cause nerve damage, the main symptoms of which include tingling, loss of touch, and muscle weakness. Confusion can arise when Vitamin B12 becomes too low. Vitamin B12 deficiency anemia in the elderly can be mistaken for dementia. This happens because of similar symptoms.
Which group of animals are named because of their spiny skin and a peculiar water-driven tube system that they use for moving around?
(A) Hemichordata
(B) Aschelminthes
(C) Echinodermata
(D) Mollusca
1. All the creatures of Echinodermata phylum are marine and have thorny bodies.
2. There is a mass flow system in their body.
3. A specific water-conveying canal system is found, which helps in their movement.
Which of the following can degrade detritus into simpler inorganic substances?
(A) Algae
(B) Phytoplankton
(C) Fungal enzymes
(D) Lichens
1. Fungal enzymes decompose simple inorganic substances.
2. Fungi are a type of microorganisms that decompose organic matter.
3. Enzymes break down organic matter into smaller molecules, which can then be used by the body of the fungus.
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