2 Chemistry helps agriculture by providing: A Machines B Seeds C Fertilizers and pesticides D Soil only
3 Chemistry helps technology by: A Stopping inventions B Providing materials and processes C Destroying resources D Ignoring science
4 Which branch connects chemistry with physics? A Organic chemistry B Physical chemistry C Biochemistry D Environmental chemistry
6 Which branch deals with pollution and waste management? A Biochemistry B Environmental chemistry C Organic chemistry D Analytical chemistry
7 Usman is a materials scientist. He works on developing stronger and lighter alloys. Which branch of chemistry supports his work? A Inorganic chemistry and physical chemistry B Organic chemistry C Biochemistry D Nuclear chemistry
8 Analytical chemistry is used to: A Prepare compounds B Identify substances C Manufacture plastics D Study stars
10 Julia is exploring medicinal chemistry. She discovers that it is involved in designing and developing pharmaceutical drugs. Which of the following tasks is done by a medicinal chemist? A Extracting metals from ores B Synthesizing new compounds to treat diseases C Studying weather patterns D Engineering bridges
11 Homogeneous mixture has: A Uniform composition B Visible parts C Different layers D Large particles
13 Chemistry contributes to society mainly by: A Destroying resources B Improving quality of life C Increasing pollution only D Stopping technology
14 Which branch explains energy changes and reaction rates? A Organic chemistry B Physical chemistry C Industrial chemistry D Biochemistry
16 Amina is studying the definition of chemistry in her science class. She learns that chemistry is the branch of science that deals with the composition, structure, properties, and reactions of matter. Based on this definition, which of the following best describes the scope of chemistry? A It only studies living organisms B It studies matter and the changes it undergoes, including energy changes C It focuses only on the earth's atmosphere D It exclusively studies nuclear reactions
17 Nadia is studying the chemistry of the atmosphere. She learns about the ozone layer. Which branch of chemistry is concerned with atmospheric chemistry? A Environmental chemistry B Organic chemistry C Industrial chemistry D Nuclear chemistry
18 Paula is learning about the role of chemistry in developing new materials. She learns about carbon nanotubes. Which branch of chemistry is involved in nanotechnology? A Analytical chemistry B Physical chemistry and materials chemistry C Biochemistry D Geochemistry
19 Paula is studying inorganic chemistry applications. She learns that inorganic compounds are used in many products. Which of the following is an example of an inorganic compound used in daily life? A Glucose in food B Table salt C Ethanol in beverages D Acetic acid in vinegar
20 Inorganic chemistry mainly studies: A Carbon compounds B Living organisms C Non-carbon compounds D Polymers
21 Diana is learning about harnessing solar energy. She reads about photovoltaic cells that use silicon. Which type of chemistry is involved in the production of silicon-based solar cells? A Organic chemistry B Inorganic and physical chemistry C Biochemistry D Nuclear chemistry
22 Which branch is most useful for studying chemical equilibrium? A Physical chemistry B Industrial chemistry C Environmental chemistry D Organic chemistry
23 Which branch helps in quality control of products? A Organic chemistry B Analytical chemistry C Nuclear chemistry D Biochemistry
25 Yara is a science student learning about the importance of chemistry. She understands that chemistry helps in solving real-world problems. Which of the following is a global problem that chemistry addresses? A Climate change and sustainable energy B The study of history C The development of languages D The creation of art
26 Chemistry helps in understanding nature by studying: A Only living things B Only non-living things C Matter and its changes D Only machines
27 Polymer chemistry is related to: A Small molecules B Metals C Large molecules like plastics D Salts
29 Samir is studying the chemistry of stars. He learns that stars contain different elements. Which branch of chemistry is focused on the chemistry of celestial bodies? A Astrochemistry B Organic chemistry C Industrial chemistry D Medicinal chemistry
30 Analytical chemistry is concerned with: A Manufacturing chemicals B Identifying and measuring substances C Environmental pollution D Carbon compounds