Shoe flower belongs to (1) Solanaceae (2) MAlvaceae (3) Papilionatae (4) Liliceae
Answer: (2) The scientific name of the shoe flower is Hibiscus or Hibiscus rosa-Sinensis, which belongs to the genus Malvaceae.... View Article
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What is the function of adrenaline hormone in the body ?
Answer: The adrenal glands are endocrine glands that are responsible for producing important hormones required for bodily functions. Adrenaline is... View Article
Which of the following mixtures will have the lowest pH at 298 K ? (1) 10ml 0.05N CH3COOH + 5ml 0.1N NH4OH (2) 5ml 0.1N NH4Cl + 5ml 0.2N NH4OH (3) 5ml 0.01N CH3COOH + 10ml 0.05N CH3COONa (4) 5ml 0.1N CH3COOH + 5ml 0.2N NH4OH
Answer: (3) Option (1)Produces CH3COONH4. pKa value of CH3COOH and pKb value of NH4OH are same of 7 since they... View Article
Examples of multicellular organisms are (1) Algae, Bacteria (2) Bacteria, Fungi (3) Bacteria, Viruses (4) Algae, Fungi
Answer: (4) Algae, fungi Explanation Multicellular organisms are those that are made up of millions of cells. Algae – Photosynthetic... View Article
What are Cry proteins? Name an organism that produces it. How has man exploited this protein for his benefit?
Answer: Cry proteins are poisonous proteins called insecticidal proteins which are secreted in crystal form by Bacillus thuringiensis during a... View Article
What is immunisation?
Answer: It is the capacity of the body to produce an immune response either naturally, or through vaccines. Such approaches... View Article
Write down, in figures, seventeen thousand and seventeen.
Answer: Seventeen thousand and seventeen can be written in figures as 17017.
Explain how a potential barrier is developed in a p-n junction diode.
Answer: A p-n junction is an interface or a boundary between two semiconductor material types, namely the p-type and the... View Article
Write the number names according to: Indian system and International system (1) 236749 (2) 48670002
Answer: A numeral system is defined as a writing system to express the number in a consistent manner. The main... View Article
The metallic element present in chlorophyll is: (1) Hg (2) Fe (3) Mg (4) Ni
Answer: (3) The structure of Chlorophyll consists of four nitrogen atoms that surround a magnesium atom. A hydrocarbon tail is... View Article
Angora wool is obtained from (1) Sheep (2) Camel (3) Angora wool (4) Yak
Answer: (3) Angora hair or Angora fiber refers to the downy coat obtained by the Angora rabbit. While the names... View Article
The study of blood vessels is termed as (1) Angiology (2) Cardiology (3) Haematology (4) Histology
Answer: (1) Angiology is the medical science that studies circulatory and lymphatic system diseases, i.e. lymphatic vases, arteries and veins... View Article
Explain Schottky and Frenkel defects.
Answer: Schottky defect Schottky defect or small shot effect is named after a popular German physicist Walter H. In his... View Article
Calculate the angle x and angle y value in the given figure?
Answer: From the given figure AB = AC and BD = CD Then the diagonally opposite angles are equal. ∠ABD... View Article
Define magnifying power of a telescope. Write its expression.A small telescope has an objective lens of focal length 150cm and an eye piece of focal length 5cm. If this telescope is used to view a 100m high tower 3km away, find the height of the final image when it is formed 25cm away from the eye piece.
Answer: (1) The magnifying power of the telescope is the ratio of the angle subtended at the eye by the... View Article
Equivalent mass of KMnO4 in acidic, basic and neutral are in the ratio of: (1) 3:5:15 (2) 5:3:1 (3) 5:1:3 (4) 3:15:5
Answer: (4) Equivalent weight can be calculated by using the formula Equivalent weight = Molar mass/number of electrons lost or... View Article
Methanol and ethanol are distinguished by (1) Treating with Schiff’s reagent (2) Treating with Lucas agent (3) Heating with iodine and alkali (4) Treating with CrO3 in dil.H2SO4
Answer: (3) Iodoform test is used to check the presence of carbonyl compounds with the structure R-CO-CH3 or alcohols with... View Article
Example of pivot joint is (1) Atlanto-axial joint (2) Shoulder joint (3) Hip joint (4) None of the above
Answer: (1) The pivot joint is a synovial joint which allows the bone to move uniaxially around one axis of... View Article
What is called as ‘black gold’? (1) Hydrocarbon (2) Coal (3) petroleum (4) Ether
Answer: (3) Petroleum is referred to as Black Gold. This name itself is an indication of its importance to humans.... View Article
State the role of pancreatic juice in the digestion of proteins.
Answer: Three major digestive juices are secreted within the small intestine, they are bile juice, pancreatic juice and intestinal juice.... View Article
