What are the figures having same shape and size called?
Answer: Figures having the same size and shape are known as congruent shapes. Congruence is a term used to describe... View Article
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What is the principal quantum number for second period?
Answer: The principal quantum number for the second period is 2. Principal quantum number Principal quantum numbers are denoted by... View Article
Vapour pressure of a liquid decreases with increase in________
Answer: Vapour pressure decreases with increase in polarity of liquid molecules. What is vapour pressure? Vapour pressure is defined as... View Article
How many valence electrons are present in sulphur atom?
Valence is the number of electrons an atom must lose or gain to attain the nearest noble gas or inert... View Article
How is the sex of the child determined in human beings?
Answer: The sex-determining mechanism in humans is the XY type. Humans contain 23 pairs of chromosomes. 22 pairs of chromosomes... View Article
Explain why chloroplasts are found only in plant cells?
The chloroplast is an organelle, having chlorophyll pigments in them. These pigments trap light energy to support photosynthetic reaction. Chloroplasts... View Article
Explain what is a compound with the help of an example.
Answer: Compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed... View Article
Name the contents that are present in the bile pigment.
Answer: Bile contains pigments, bilirubin and biliverdin produced by the breakdown of dead and worn out red blood cells. Where... View Article
Name the regions in which parenchyma tissue is present.
Answer: Leaves, fruits, and flowers are the regions where the parenchyma tissue is present. Parenchyma is found in soft plant parts,... View Article
What are some common examples of paramagnetic elements?
Answer: Paramagnetic materials have some unpaired electrons due to these unpaired electrons the net magnetic moment of all electrons in... View Article
Tranquilizers are substances used for the treatment of__________
Answer: Tranquillizers are substances used for the treatment of mental diseases. Tranquillizers Tranquillizers are a medicinal drug that helps in... View Article
Name the common biofertilizers used in organic farming.
Answer: The common biofertilizers used in organic farming are nitrogen fixing bacteria and cyanobacteria. What is Biofertilizer? Biofertilizers are microbe-containing... View Article
What is the oxidation numberof nitrogen in nitrate ion?
Answer: Oxidation number of NO3– is +5. Oxidation number of nitrate ion can be calculated as follows, Let X be... View Article
In which phylum are the pseudocoelomate animals placed?
Answer: The pseudocoelomate animals, showing false coelom are included in phylum Nematoda. Pseudocoelomate True coelom is not present. The blastocoel... View Article
Which eka aluminium element was predicted by Mendeleev?
Answer: Eka aluminium predicted by Mendeleev is Gallium. Eka-aluminum and gallium are two names for the same element, as Eka-Aluminium... View Article
Give an example of physical as well as chemical change.
Answer: Burning of a candle is a chemical as well as physical change as it involves change in both chemical and... View Article
What produces more severe burns, boiling water or steam?
Answer: Steam produces more severe burns than boiling water. We know that in both boiling water and steam, the temperature... View Article
What is the solid portion of the Earth’s surface called?
The solid portion of the Earth’s surface called Lithosphere. Let u know more about the lithosphere layer. Definition The outermost... View Article
Which compound gives red colour with Fehling’s solution?
Answer: Glucose gives red colour in Fehling’s test. Fehling’s test Fehling’s reagent, a blue-colored basic bistartratocuprate(II) complex solution, is mixed... View Article
In 2Na(S) + Cl2 → 2 NaCl (S): The oxidising agent is_________
Answer: In 2Na(S) + Cl2 → 2 NaCl (S): The oxidising agent is chlorine. According to the new concept, loss... View Article
