Among the following colours, which is the highest absorbent of heat radiations? a. White b. Yellow c. Black d. Violet
Black colour is the highest absorbent of heat radiations.
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Rain water has a pH of 5.6 due to presence of:
Rain water has a pH of 5.6 due to presence of H+ ions.
Which of the following lenses would you prefer to use while reading small letters found in a dictionary? Option A: A convex lens of focal length 50 cm Option B: A concave lens of focal length 50 cm Option C: A convex lens of focal length 5 cm Option D: A concave lens of focal length 5 cm
Correct option: C A convex lens of focal length 5 cm Convex lens A convex lens forms an enlarged and... View Article
According to the conductivity, pick the odd one out from the following: Glass, Copper, Iron and Gold
Glass is an insulator while others are conductors.
Name the inert gas that has compounds that are known for the maximum number of compounds.
XeF2, XeF4 and XeF6 are the known compounds of Xenon. It forms bonds with oxygen and fluorine. Xe has the least ionization enthalpy... View Article
Lead carbonate is heated. The colour of its residue on cooling is
Yellow is the colour of the residue on heating.
What is the arrangement of spheres present in hexagonal close packing?
In hcp, the arrangement of spheres is ABAB.
Which among the following states is the smallest in terms of area? a) God b) Kerala c) Sikkim d) Madhya Pradesh
Goa is the smallest state in terms of area.
X, Y and Z are three crystalline solids which are soluble in water and have a common anion. To help you to identify X, Y and Z, you are provided with the following experimental observations. A reddish-brown gas is obtained when X, Y and Z are separately warmed with concentrated sulphuric acid and copper turnings added to mixture.
The common anion between X, Y, Z is NO3–
Which of the following is not a part of the female reproductive system in human beings?(a) Ovary (b) Uterus (c) Vas deferens (d) Fallopian tube
Answer: (c) Vas deferens Reproduction is the biological process of creating a new person or offspring who is genetically identical... View Article
What are the factors on which the strength of an induced current depends?
The current induced in a conducting loop that is exposed to a changing magnetic field is known as induced current.... View Article
How can one dry Hydrogen chloride gas that is highly water soluble?
Concentrated sulphuric acid
Select the molecule in which the central atom has incomplete octet. a. Beryllium b. Phosphorous c. Silicon d.Chlorine
Be has an incomplete octet.
Lakshadweep and the Andaman and Nicobar Islands have which kind of forests?
Tropical evergreen forests
Which one of the following materials cannot be used to make a lens? (1) Water (2) Glass (3) Plastic (4) Clay
Answer: (4) Clay For lens preparation, transparent material may be used. Glass and water are transparent materials. There is a certain... View Article
Name the gas obtained when rock salt reacts with conc. sulphuric acid.
Hydrogen chloride gas
Seasons change due to the change in the position of the
Earth around the Sun
On which of the following places are the one horned rhinoceros found?
Brahmaputra plains
Which of the following is not an example of a bio-mass energy source? A) wood B) gobar gas C) nuclear energy D) coal
Answer: (C) nuclear energy Bio-mass is a source of energy derived from plant and animal waste. During nuclear fission and... View Article
Name the force which is a must for sustaining circular motion.
Centripetal Force
