These questions cover a range of difficulty levels and can help reinforce your understanding of surds through practice.
Radioactivity is the act of emitting radiation spontaneously. This is done by an atomic nucleus that, for some reason, is unstable; it "wants" to give up some energy in order
A clothing shop uses a barcode reader at the checkout. The checkout is linked to a stock control system. The system monitors stock levels and automatically keeps them above a
Synthetic polymerization refers to the process of chemically synthesizing polymers, which are large molecules composed of repeating subunits called monomers.
Which metal would be suitable for all of the following uses? • making aircraft bodies • making food containers • making overhead power cables
A covalent bond is a chemical bond that involves the sharing of electrons to form electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs.
“If there is one lesson I've learned from failure and success, it's this. I am not the outcome. I am never the result. I am only the effort.”
1.What is the SI unit of electric charge? a) Ampere b) Coulomb c) Volt d) Ohm 2.What does Gauss's Law in electrostatics describe? a) Electric flux through a closed surface
Extraction of metals. Metal ores are naturally occurring rocks that contain metals or metal compounds in sufficient amounts to make it worthwhile extracting them.
An algorithm has been written in pseudocode to input the names and marks of 35 students. The algorithm stores the names and marks in two arrays Name[ ] and Mark[
A programmer writes a program to weigh baskets of fruit in grams, keeping a total of the weight and counting the number of baskets. The total weight is stored in
Motion involves a change in the position of an object over time. Motion influences when objects move and the forces necessary to make them move.
In chemistry and manufacturing, electrolysis is a technique that uses direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the
Which statement is not correct? A-> Petroleum is a mixture of hydrocarbons. B ->The main constituent of natural gas is ethane. C-> The naphtha fraction of petroleum is used for
An acid is a substance that forms hydrogen ions H+ when dissolved in water, and A base is a substance that forms hydroxide ions OH- when dissolved in water.
Word problems provide a bridge between abstract mathematical concepts and their practical application in real-life situations. They help students understand the relevance and
Enterprise is one of the four factors of production. Which of the following is a definition of enterprise?
"The only way to learn mathematics is to do mathematics." - Paul Halmos
In physics, mathematics, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities. Waves can be periodic, in which case those quantities
Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have