alleryAcids characteristically taste:
- salty
- sweet
- sour
- bitter
Show answer and solution
Correct answer: C. sour
Acids are sour to taste; bases are bitter.
UP Board Class 10 Materials: Metals and Non-Metals — practice questions
Explore 6 free Materials: Metals and Non-Metals questions in UP Board Class 10 Science. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–6 of 6.
Acids characteristically taste:Read the answer and worked solution →When dilute hydrochloric acid is poured on zinc granules, which gas is evolved?Read the answer and worked solution →Which ion concentration *increases* when an acid dissolves in water?Read the answer and worked solution →Baking soda is chemically:Read the answer and worked solution →Which of the following is not a mineral acid?Read the answer and worked solution →Which among the following is not a base?Read the answer and worked solution →
Worked practice questions
When dilute hydrochloric acid is poured on zinc granules, which gas is evolved?
- hydrogen
- oxygen
- carbon dioxide
- chlorine
Show answer and solution
Correct answer: A. hydrogen
Acid + metal → salt + hydrogen.
Zn + 2 HCl → ZnCl₂ + H₂.
The pop test confirms hydrogen.
Which ion concentration *increases* when an acid dissolves in water?
- hydrogen ion (H⁺)
- hydroxide ion (OH⁻)
- chloride ion (Cl⁻)
- sodium ion (Na⁺)
Show answer and solution
Correct answer: A. hydrogen ion (H⁺)
Acids dissolve in water to release H⁺ ions.
More H⁺ → lower pH → more acidic.
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