alleryஒரு நடுநிலைக் கரைசலின் (25°C-ல் உள்ள தூய நீர்) pH மதிப்பு:
A$7$
B$0$
C$14$
D$1$
Answer & Solution
Correct answer: A. $7$
pH 7 = நடுநிலை.
pH < 7 என்பது அமிலம் (0 வரை); pH > 7 என்பது காரம் (14 வரை).
25°C-ல் உள்ள தூய நீரின் pH மதிப்பு சரியாக 7 ஆகும்.
Keep practising Science & Technology
Browse all Science & Technology questions for RRB NTPC, or explore more Science topics.
Related questions
Which dicarboxylic acid is naturally present in significant amounts in spinach and tomatoeWhich organic acid is an abundant natural constituent found in tamarind and unripe mangoesUnder the Brønsted–Lowry concept, an acid is fundamentally defined as a donor of which parWhich specialized glands located in the duodenum secrete protective bicarbonate-rich mucusWhat is the hardest anatomical tissue in the human body that coats the crown of teeth?Which cartilaginous flap folds downward during swallowing to keep food from entering the tWho shared the 1929 Nobel Prize in Physiology with Frederick Hopkins for discovering vitamIn 1747, which Scottish naval physician discovered that citrus fruits prevent scurvy?