Science Questions
All Science MCQs for CTEVT entrance exam.
Which of these is a non-membrane bound organelle found in both prokaryotes and eukaryotes?
Which type of chemical reaction is represented by the general equation A + B → AB?
What is the process of adding oxygen to a substance called?
Which of the following substances is used as a catalyst in the laboratory preparation of oxygen from potassium chlorate?
When an acid reacts with a base to form salt and water, the reaction is known as:
Which gas is evolved when zinc granules react with dilute sulfuric acid?
In a chemical equation, what does the symbol (s) represent?
A reaction that releases heat energy into the surroundings is called:
Which of these is an example of a decomposition reaction?
What happens to the rate of a chemical reaction when the temperature is increased?
Which substance is reduced in the reaction: CuO + H2 → Cu + H2O?
The reaction between iron and copper sulfate solution is an example of:
What are the substances that take part in a chemical reaction called?
Which of the following is a physical change rather than a chemical reaction?
In the reaction $2Mg + O_2 \rightarrow 2MgO$, what is the ratio of Mg to O2 atoms/molecules by stoichiometric coefficients?
Which of the following is a characteristic of a chemical reaction?
What is the product formed when quicklime (CaO) reacts with water?
Which of the following is an irreversible reaction under normal conditions?