Find the average of all odd numbers up to 100 (1) 30 (2) 50 (3) 4 (4) 10
Answer: (2) Odd numbers are defined as any number which cannot be divided by two. In other words, a number... View Article
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Draw the circuit diagram of AND gate using diodes.
Answer: AND gate AND gate is one type of logic gate in which the output of an AND gate attains... View Article
Chiasmata are formed during (1 Zygotene (2) Pachytene (3) Diplotene (4) Leptotene
Answer: (3) During diplotene, the paired chromosomes form an X-shaped structure known as chiasmata. At chiasmata, the crossing over between... View Article
What is called the rate of doing work in an electric circuit? (1) Power (2) Energy (3) Current (4) Voltage
Answer: (1) Electric power is the rate at which work is done or energy is transformed into an electrical circuit.... View Article
Hydride gap’ is referred to which region of the periodic table ? (1) Group 3,4,and 5 (2) Group 5,6 and 7 (3) Group 7,8 and 9 (4) Group 3,5 and 7
Answer: (3) Compounds of hydrogen with less electronegative elements are known as hydrides. So when hydrogen reacts with any other... View Article
Strongest muscles in human body are found in (1) Jaws (2) Thighs (3) Neck (4) Hands
Answer: (1) The strongest muscle in human beings is the masseter muscle. The muscle masseter is a thick muscle in... View Article
Write number of edges, faces and vertices of cube, cuboid, cone, cylinder, sphere, triangular pyramid, rectangular and prism.
Answer: Three-dimensional shapes have many attributes, such as vertices, faces, and edges. The flat surfaces of the 3D shapes are... View Article
Differentiate between menarche and menopause
Answer: Menarche begins when a child reaches puberty. Menarche is the first period of menstruation in females, which occurs between... View Article
Color of magnesium oxide is: (1) White (2) Blue (3) Grey (4) Pink
Answer: (1) Magnesium oxide is made up of Mg2+ and O2- ions and are connected to each other by an... View Article
Size of colloidal partical varies from (1) 10^?7 to 10^?9cm (2) 10^?9 to 10^?17cm (3) 10^?5 to 10^?7cm (4) 10^?4 to 10^?10cm
Answer: (3) A Colloid is an intermediate between solution and suspension. It has particles with sizes between 2 to 1000... View Article
Which colour of the light has the longest wavelength ? (1) Red (2) Blue (3) Green (4) Violet
Answer: (1) In the normal light spectrum, there are seven basic colours known as VIBGYOR and each colour has a... View Article
Spindle fibres are made of (1) Actin protein and RNA (2) Cellulose and RNA (3) Tubulin protein and RNA (4) Both A and C
Answer: (3) A number of fibres appear between the two daughter centrioles, which are called the spindle fibres. Spindle fibers... View Article
Explain the term thecodont and diphyodont.
Answer: Humans and other mammals, including geckos, vertebrates, and reptiles are all classified as thecodonts and diphyodonts. Thecodont dentition is... View Article
An air bubble inside water behaves like a _________ lens.
Answer: An air bubble inside water behaves like a Concave lens. Concave lens Inside water, the air bubble behaves like a... View Article
Can you store copper sulphate solutions in a zinc pot?
Answer: A streamlined body is a shape that decreases the friction drag between a fluid, such as air and water,... View Article
A streamlined body: (1) Increases friction (2) Reduces friction (3) Decreases weight (4) Increases weight
Answer: (2) A streamlined body is a shape that decreases the friction drag between a fluid, such as air and... View Article
Voluntary muscles are found in (1) Alimentary canal (2) Limbs (3) Iris of the eye (4) Bronchi of lungs
Answer: (2) Skeletal muscle or voluntary muscles is one of the three types of muscles in the human body- the... View Article
What do you understand by the term ‘auto-protolysis’ of water? What is its significance?
Answer: A self ionization of water molecules takes place to produce hydronium ion and hydroxide ion are known as auto-pyrolysis... View Article
Blister copper is : (1) Electrically refined copper (2) A mixture of impure copper and silver (3) Copper containing 2% impurity (4) Present in the anode mud in an electrolytic process
Answer: (1) Copper is usually mined from its coal by smelting process known as blister copper. It is about 98... View Article
Why is atomic mass of chlorine taken as 35.5 u and not a whole number like 35 u or 36 u? Explain.
Answer: The reason for the atomic mass of chlorine taken as 35.5u and not as 35u because of the presence... View Article
