SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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are combined together chemically
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cannot be separated easily
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must be put together in definite ratios
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all of these
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Detailed explanation-1: -Lithium, Beryllium, Sodium, Magnesium, Aluminium, Potassium, and Calcium are metals in the first twenty elements. Hydrogen, Helium, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Phosphorous, Sulphur, Chlorine, and Argon are the non-metals in the first twenty elements.
Detailed explanation-2: -Water. Chemical Formula: H2O. Table Salt. Chemical Formula: NaCl. Sucrose (Sugar) Chemical Formula: C12H22O11. Soaps. Chemical Formula: RCOO–Na, Where R is a long chain of carbon atoms ranging from 16-18 in number. Toothpaste. Baking Powder. Mouthwash. Nailpaint Remover. More items
Detailed explanation-3: -Hydrocarbons. Alkanes. Alkenes. Alkynes. Cyclic Hydrocarbons. Aromatic Hydrocarbons. Alcohols. 25-Aug-2020
Detailed explanation-4: -Common salt. Water. Soap. Baking soda. Sugar.