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Science and techtales Science and TechTales is a platform dedicated to explaining science, engineering, and emerging technologies in a clear, educational, and engaging way.

From groundbreaking inventions to future innovations, we bring science and technology stories to life.

12/09/2026

PHYSICS:
What is Acceleration?

12/09/2026

Which of the following is a strong electrolyte?
A. Sugar solution
B. Sodium chloride solution
C. Ethanol solution
D. Pure water

12/09/2026

Which simple machine consists of a wheel and a rope?
A. Lever
B. Pulley
C. Screw
D. Wedge

12/09/2026

The flap that prevents food entering the windpipe is:
A. Glottis
B. Epiglottis
C. Larynx
D. Pharynx

11/09/2026

Which functional group characterizes carboxylic acids?
A. –OH
B. –COOH
C. –CHO
D. –NH₂

11/09/2026

The turning effect of a force is called:
A. Pressure
B. Moment
C. Impulse
D. Momentum

11/09/2026

Which blood vessel carries oxygenated blood from the lungs to the heart?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Vena cava

10/09/2026

Which hydrocarbon contains only single carbon-carbon bonds?
A. Alkene
B. Alkyne
C. Alkane
D. Aromatic hydrocarbon

09/09/2026

BIOLOGY
What is Nutrition?

09/09/2026

Which part of the respiratory system contains the vocal cords?
A. Larynx
B. Trachea
C. Bronchus
D. Alveolus

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