Incident ray is the ray of light striking a surface (A) True (B) False
A ray that strikes the surface separating the two optical media is called the incident ray. The angle which the... View Article
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Give one example of the following type of the motion. Uniform retardation
Retardation is nothing but a negative acceleration. The body’s velocity will either increase or decrease. The velocity shift is known... View Article
Dachigam sanctuary is located in (A) West Bengal (B) Jammu and Kashmir (C) Madhya Pradesh (D) Rajasthan
Jammu and Kashmir Dachigam sanctuary is located 22 kilometers from Srinagar, Jammu and Kashmir. The name literally stands for ‘ten... View Article
Define echo
The sound heard after reflections from a rigid surface such as a cliff or a wall are called echo creating... View Article
Bunodont teeth occur in (A) Elephant (B) Sheep (C) Carnivores (D) Humans
Bunodont teeth occur in humans. Therefore, the correct option is (D)
What do you think the earth looks like? Make a drawing of the earth in your notebook.
The earth looks like a sphere in shape. The picture of earth is shown below
What various functions does a constitution perform?
A constitution is defined as the set of written rules, that are accepted by all the people living together in... View Article
In which year was the first Indian Satellite Aryabhata was launched?
The first Indian Satellite Aryabhata was launched on April 19, 1975
Which of the following is an electrolyte (A) AgNO3 solution (B) Alcohol (C) Mercury (D) Sugar solution
AgNO3 solution An electrolyte is defined as the substance that produces an electrically conducting solution when it is dissolved in... View Article
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
The chemical name of the brown ring is Nitroso ferrous sulphate and the formula is FeSO4.NO
Back cross is a cross between (A) F1 x F1 (B) F1 x Recessive (C) F1 x Dominant (D) F1 x Any Parent
F1 x any parent Backcrossing is a crossing of a hybrid with one of its parents, or an adult genetically... View Article
Distinguish between absolute humidity and relative humidity
Relative Humidity 1. The amount of water vapour present in air can be expressed as a percentage of the amount... View Article
What is scalene triangle?
A scalene triangle is a triangle that has all its sides unequal in length and all its angles unequal in... View Article
Find the angle which is supplementary of itself
When the sum of two angles is 180°, then the angles are known as supplementary angles. Let us consider the... View Article
Two bodies are projected with the same velocity. If one is projected at an angle of 30 degree and the other at an angle of 60 degree to the horizontal, find the ratio of the maximum heights reached. (A) 1/4 (B) 1/3 (C) 1/5 (D) 1/9
1/3 H1/H2 = sin2θ1/sin2θ2 = sin2300/sin2600 We get, = 1/3 Hence, the correct option is (B)
Cell mediated immunity is provided by (A) B-Lymphocytes (B) Plasma cells (C) Interferon (D) T-Lymphocytes
T-Lymphocytes Cell-mediated immunity is facilitated by the T-helper and cytotoxic T-cells. Cytokines secreted by the T- helper cells activate phagocytic... View Article
Give the exact location of the lenticels
A lenticel is a porous tissue comprising cells with huge intercellular spaces. These can be found in the roots of... View Article
What is picric acid? How it is prepared from phenol?
Picric acid is an organic compound. 2, 4, 6 – trinitrophenol is the IUPAC name of picric acid. It is... View Article
A cycle dynamo works on the principle of (A) Chemical effects of current (B) Magnetic effects of current (C) Electromagnetic induction (D) Mechanical effects of current
Electromagnetic induction A cycle dynamo works on the principle of Faradays laws of electromagnetic induction. It is an electric motor... View Article
Describe the industrial policy 1991, towards the public sector?
Following reforms were introduced in the Industrial Policy, 1991 for the public sector. 1. Dereservation: In 1991, only 8 industries... View Article
