To determine the kind of detergent, use the clue:
It is used in washing, has a negative head, and produces suds.

What kind of soap is commonly used for scrubbing floors?

______________ is produced as a byproduct and has a variety of uses in soaps

Synthetic detergents have more advantages than soaps because synthetic detergents are

Tadpole structure is reported to exist in the soap molecule.

Any substance which can remove dirt from the clothes is called as

Soaps are ______ based soapy detergents.

Detergent is

The non-metallic element that is purple black color is

Which of the following solvents does iodine dissolve?

Which of the following are the allotropes of carbon?

The correct option is c) Both A and B.
When an element exists in multiple crystal forms, those forms are called allotropes. The two most common allotropes of carbon are diamond and graphite. The crystal structure of diamond is an infinite three-dimensional arrangement of carbon atoms, forming a structure in which each bond forms an equal angle with an adjacent bond. When the ends of the bond are joined, the structure becomes a tetrahedral, four-sided, three-sided pyramid structure.

Which is the 5^th rare gas present in the atmosphere?

The correct option is d)Xe.

• Xenon gas is the rarest gas on earth. Air contains only 0.000009% xenon. Therefore, it is only used when no other alternative lighter gas is available.
• In addition to xenon, neon and krypton are present at 0.0018% and 0.00011%, respectively.
• Applications of xenon gas include the manufacture of automotive headlights, semiconductors, plasma display panels and flash cameras.
• In addition, xenon also has medical applications, including its anesthetic properties.

Under standard temperature and pressure (STP) conditions, neon exists as

The correct option is a)monoatomic gas.

• Neon is a monatomic atom because it is an inert gas.
• Noble gases have completely filled outer electron shells. This means that atoms do not have to gain or lose electrons.
• Diatomic elements such as oxygen and nitrogen require electrons to fill their outer shells. When diatomic elements are not bonded to another element, they share electrons with another atom of the same kind. For this reason, oxygen and nitrogen are written as O₂ and N₂.
• Neon is simply written Ne.

_______ is the first and lightest noble gas.

The correct option is c)He.

• Helium is the lightest of the noble gases and the second most abundant element in the universe. The sun produces hundreds of millions of tons of helium every second.
• Closer to home, over hundreds of millions of years, the radioactive elements decayed deep within the earth to produce helium, and the helium slowly made its way to the surface, where it became trapped in the strata.
• Of the 191,000 particles of air swirling around us, one is helium, but the gas is so light that it  escapes Earth's easily gravitational pull and can be lost in space.

Among the following, the element possessing a low melting point is

The correct option is b)Non-metals.
Non-metals that form discrete molecules have low melting points. This is because the intermolecular attraction is only about 5-10% of the strength of a covalent bond. Examples include oxygen, nitrogen, fluorine, white phosphorus, sulfur and chlorine.
Non-metals that form network solids have higher melting points because covalent bonds must be broken in order to melt. Examples are boron, carbon and silicon, not to mention germanium.

Which of the following is a property of a non-metal?

The correct option is b)Is brittle and breaks easily
Metal is malleable and can be hammered into a plate. Gold, silver, aluminum and tin can be pounded into very thin sheets called foils. Non-metals do not have malleable properties. Non-metals are not malleable or elastic. It has a dull sheen, whereas iodine has a sheen. Examples of non-metals include carbon, oxygen, sulfur, phosphorus, etc.