What is the conclusion for an object moving with a uniform velocity?
There is no unbalanced force. There might be a number of forces acting on the body but these forces are... View Article
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Among the following compounds the one that is paramagnetic is: a. O22- b. O3 c. N2O d. O2-
In O22-, O3 and N2O no unpaired electron is present. But O2– has one unpaired electron and shows paramagnetic behaviour.
What is a Finkelstein reaction?
In the Finkelstein reaction, alkyl iodides are prepared by the reaction of alkyl chlorides/bromides with NaI in dry acetone. Finkelstein... View Article
Nitric acid does not react with which of the following metals? a. Chromium b. Magnesium c. Maganese d. Zinc
Chromium do not dissolve in concentrated nitric acid because of the formation of a passive film of oxide on the... View Article
Amongst the following molecules, the one with the highest bond multiplicity is: a. Ethene b. Ethyne c. Ethane
Ethane has single bond, ethene has double bond, ethyne has triple bond. Hence ethyne has highest bond multiplicity.
Oxygen is transported from alveoli to tissues in the form of
Oxygen is transported from alveoli to tissues in the form of oxy haemoglobin that is an association of O2 with... View Article
Oxidation reactions involve loss of dihydrogen so they are also known as:
Oxidation reactions are also known as dehydrogenation reactions as they involve loss of dihydrogen from alcohol.
A homopolymer has only one type of building block called a monomer repeated ‘n’ number of times. A heteropolymer has more than one type of monomer. Proteins are heteropolymers made of amino acids. While a nucleic acid like DNA or RNA is made of only 4 types of nucleotide monomers, proteins are made of
Proteins are building blocks of life. Each protein is made of a long chain of amino acids. Amino acids are made... View Article
Atmosphere traps the sun’s heat near the earth’s surface. This is called:
When atmosphere traps the sun energy near the earth surface then it is known as Natural green house effect.
Be and Mg do not react with water. This is because of:
Be and Mg are kinetically inert to water due to formation of protective oxide film on the surface of it.
Is it true that two bodies exert force on each other only when they are in contact?
It is not always necessary that two bodies can exert force on one another only when they are in contact.
The electronegativity of following elements increases in the order of?
Si, P, C, N. In general, electronegativity increases across a period from left to right and decreases down the group. Si<P<C<N is the correct... View Article
What will be the flow of water if a cell is placed in a hypotonic solution?
Since in hypotonic solution osmotic pressure is less water will flow into the cell and cell will swell.
Which of the following is not a function of muscles? (a) Bones delicate the internal organs of the body (b) Bones provide a framework for the attachment of muscles and other tissues (c) Bones serve as a reservoir for calcium and phosphorus. (e) Bones enable body movements
Option(a) Bones delicate the internal organs of the body Protect the delicate internal organs of the body. The bones protect... View Article
A quantity has a value of -16 m/s2. What does this quantity indicate?
Metre per second square is a unit of acceleration and negative acceleration is known as retardation.
Name the instrument that is used for listening sounds produced within the body.
Instrument used for listening sounds produced within the body is called Stethoscope used by doctors.
Benzene diazonium chloride on reaction with phenol in weakly basic medium gives?
(a) diphenyl ether (b) p-hydroxy azobenzene (c) chlorobenzene (d) benzene Benzene diazonium chloride on reaction with phenol in weakly... View Article
Oxidation of nitrites in presence of potassium permanganate results in formation of:
Oxidation of nitrites in presence of potassium permanganate results in formation of nitrates (NO3-).
How are unused carbohydrates stored in animals?
Excess carbohydrate in animals is stored in the form of glycogen which serves as an energy reserve.
On the basis of origin of mouth, animals have been categorized into
On the basis of origin of mouth, animals have been categorized into Protostomia and deuterostomia.
