Tag: nutrients and deficiency

Questions Related to nutrients and deficiency

Stalactites are :

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. Thin, finger like mineral deposits hanging on the roofs of the caves.

  2. The mineral deposits that are left on the floor of the caves when water evaporates

  3. The mineral deposits found in mines

  4. Pure minerals extracted from the ores.

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Correct Option: A
Explanation:

A stalactile is a type of formation mineral that hangs from the ceilings of caues hot springs and other.

Which of the following is a non-metallic mineral?

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. Petroleum

  2. Feldspar

  3. Gypsum

  4. Hematite

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Correct Option: A
Explanation:

Petroleun is a liquid mixture of hydrocarbons which is present in suitable rock strata and can be extracted and refined to produce fuels including petrol, paraffin, and diesel oil; oil.
Feldspar is an abundant rock-forming mineral typically occurring as colourless or pale-coloured 
Gypsum is a soft white or grey mineral consisting of hydrated calcium sulphate.
Hematite is a reddish-black mineral consisting of ferric oxide.

Stalactites are:

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. thin, fingerlike mineral deposits hanging on the roofs of the caves

  2. the mineral deposits that are left on the floor of the caves when water evaporates

  3. the mineral deposits found in mines

  4. pure minerals extracted from the ores

Show answer
Correct Option: A
Explanation:

Stalactites is a type of mineral. It has the following properties. It is layer like mineral, very thin and deposits having finger like shape hanging from caves.

Which one of the following is correct?

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. All minerals are ores

  2. All ores one minerals.

  3. Metal is extracted from all minerals

  4. Bauxite is an ore of iron

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Correct Option: B
Explanation:

Minerals are natural elements or compounds occur in earth's crust whereas over are those, which are extracted from minerals without economic loss.

So, all ores are minerals.

A mineral is known as the ore of a metal if the metal:

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. can not be produced from it

  2. can be produced from it

  3. can be produced from it profitably

  4. present in it, is very costly

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Correct Option: C
Explanation:

A mineral is known as the ore of a metal if the metal can be produced from it profitably. There can be many minerals of a metal but the ones which undergo purification are known as ores.

Pick the correct statements.

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. All ores are minerals

  2. All minerals are ores

  3. A mineral cannot be an ore

  4. An ore cannot be a mineral

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Correct Option: A
Explanation:

Minerals are natural elements or compounds occurs in earth's crust where as ores are those, which are extracted from minerals without economic loss.

All ores are minerals.
Ex: Iron minerals are Siderite and Haematite. But Haematite is only ore.

Which of the following minerals does not contain iron?

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. Magnetitie

  2. Magnesite

  3. Haematite

  4. None of these

Show answer
Correct Option: B
Explanation:

Haematite is $Fe _2O _3$, magnetite is $Fe _3O _4$ and Magnesite is $MgCO _3$.
$\therefore$ Magnesite is not ore of iron.

Mark the incorrect statement.
(a) All minerals contain objectionable impurities.
(b) All minerals are ores.
(c) All minerals can be used to extract metals.

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. a, b

  2. a, c

  3. b, c

  4. All of the above

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Correct Option: D
Explanation:

All minerals doesn't have objectionable impurities. All minerals are not ores. All ores are minerals. All minerals are not used to extract metals. Only ores are used to extract metals.

Buckminster fullerene is the allotropic form of:

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. nitrogen

  2. carbon

  3. sulphur

  4. none of the above

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Correct Option: B
Explanation:

It is also called as the bucky ball. It is spherical in shape with the formula $C _{60}$. It has a cage like fused ring structure which resembles a football. Buckminster fullerene is the most commonly occurring fullerene molecule.

Which of the following is the ore of zinc?

evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

  1. Bauxite

  2. Magnetite

  3. Malachite

  4. Calamine

Show answer
Correct Option: D
Explanation:

$\displaystyle Calamine$ $\displaystyle ZnCO _3$ is the mineral of zinc.
Hence, option (D) is correct answer.
 
$\displaystyle Magnetite$ $\displaystyle Fe _3O _4$ is iron mineral.

$\displaystyle Malachite $ $\displaystyle Cu _2CO _3(OH) _2$ is mineral of copper.

$\displaystyle Bauxite$ $\displaystyle Al _2O _3 \cdot 2H _2O$ is ore of aluminum.