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NTSE Level Test: Metals & Non-metals


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25 Questions MCQ Test Science Class 10 | NTSE Level Test: Metals & Non-metals

NTSE Level Test: Metals & Non-metals for Class 10 2022 is part of Science Class 10 preparation. The NTSE Level Test: Metals & Non-metals questions and answers have been prepared according to the Class 10 exam syllabus.The NTSE Level Test: Metals & Non-metals MCQs are made for Class 10 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for NTSE Level Test: Metals & Non-metals below.
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NTSE Level Test: Metals & Non-metals - Question 1

The non-metal which is a liquid at room temperature–

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 1 Bromine is the only non-metal at room temperature because the intermolecular forces are strong enough so that it does not vaporize at room temperature.
NTSE Level Test: Metals & Non-metals - Question 2

Non-metal generally form –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 2

Nonmetals tend to form anions. With one, two, or three valence electrons metals tend to lose electrons to achieve a noble gas configuration. (It would require more energy to gain the 5 – 7 electrons needed to fill their valence shell.)

NTSE Level Test: Metals & Non-metals - Question 3

Which is the least conductor of heat –

NTSE Level Test: Metals & Non-metals - Question 4

Which of the following metal can we cut with the knife –

NTSE Level Test: Metals & Non-metals - Question 5

Metal have ............no. of electrons in their outer most shell –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 5

Metals have 1-3 electrons in their outermost orbit. They are present on the extreme left of the periodic table. They tend to donate electrons and obtain the stable electronic configuration of the nearest noble gas. The valency on metals also ranges from 1-3 .

NTSE Level Test: Metals & Non-metals - Question 6

Which oxide is neutral ?

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 6

Neutral oxides show neither basic nor acidic properties and hence do not form salts when reacted with acids or bases, eg., water H2O,  carbon monoxide CO  etc. are neutral oxides. 

NTSE Level Test: Metals & Non-metals - Question 7

Which hydride commercially known as hydrolith –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 7

Calcium hydride is called hydrolith because CaH2 is a saline hydride,meaning that its structure is salt-like.

NTSE Level Test: Metals & Non-metals - Question 8

Which of the following elements is metalloid –

NTSE Level Test: Metals & Non-metals - Question 9

Which metal does not react with oxygen –

NTSE Level Test: Metals & Non-metals - Question 10

Which of the following metal reacts neither with cold water nor with hot water but reacts with hot steam to produce hydrogen gas?

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 10

Iron neither reacts with cold water nor with hot water but reacts with steam to produce hydrogen gas.

NTSE Level Test: Metals & Non-metals - Question 11

Which non-metal have semi conductor property–

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 11

Silicon is doped with other Microelements to increase its conductivity. It is used in transistors, solar cells, semiconductor devices.

NTSE Level Test: Metals & Non-metals - Question 12

Which metal has high melting point

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 12

Of all metals in pure form, tungsten has the highest melting point (3,422 °C, 6,192 °F).

NTSE Level Test: Metals & Non-metals - Question 13

Al2.O3 2SiO2.2H2O is the chemical formula of –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 13

China Clay is also known as kaolin & white clay. Primary clay formed by natural kaolinisation process. it is formed by decomposition of some part of feldspar mineral.White in color , Used in ceramic slip casting process, Pressing processes and forming process as a body former and filler.

NTSE Level Test: Metals & Non-metals - Question 14

An alloy is –

NTSE Level Test: Metals & Non-metals - Question 15

Which chemical is known as king of chemicals –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 15

Sulfuric acid is commonly supplied at concentrations of 78, 93 or 98 percent. Sulphuric acid is sometimes referred to as the " King of chemicals " because it is produced. 

NTSE Level Test: Metals & Non-metals - Question 16

Which non-metal is the best conductor of electricity –

NTSE Level Test: Metals & Non-metals - Question 17

Which compound is used in photography –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 17

Silver chloride, silver bromide (AgBr) and silver iodide (AgI) are the three silver "halide" compounds used in photography.

NTSE Level Test: Metals & Non-metals - Question 18

NaHCOis chemical formula of –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 18

Sodium bicarbonate, also commonly known as baking soda, is commonly seen as a white, fine powder and has the chemical formula NaHCO3. It has one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms. It is a very useful chemical that is alkaline in nature.

NTSE Level Test: Metals & Non-metals - Question 19

Carnallite is the mineral of –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 19

Carnallite is an evaporite mineral a hydrated potassium magnesium chloride. It is variably colored yellow to white, reddish or blue. It occurs with a sequence of potassium and magnesium evaporite.

NTSE Level Test: Metals & Non-metals - Question 20

The sodium metal can be stored in –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 20

Sodium is stored under kerosene because of its high chemical reactivity with almost all of other elements (for example oxygen from air which oxidizes it instantly). Kerosene and mineral oil are the only chemicals that make the sodium inert.

NTSE Level Test: Metals & Non-metals - Question 21

The magnesium is used in –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 21

The magnesium is used in Flash bulb, Grignard reagent, Electron - alloy. When magnesium burns, it makes very bright white light. Elektron is an alloy containing magnesium (90%) , zinc, aluminum (9%) and other  other Metals (1%) .

NTSE Level Test: Metals & Non-metals - Question 22

In the reaction M + O2 →MO2 (super oxide) the metal is -

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 22

M + O2 -- MO2 (super oxide)

Metal that has tendency to form super oxide : K (Potassium due to its large size)

With lithium, it forms lithium oxide. With sodium, it forms peroxide and oxide of sodium. With barium, it forms barium oxide.

NTSE Level Test: Metals & Non-metals - Question 23

The most malleable metal is –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 23

The most malleable metal is Gold (Au).It must be surprising as most of us have never come across gold foils or gold leaf that often in our lives unlike aluminium,iron,copper foils.One reason for this must be because of the cost of this noble metal,gold.

NTSE Level Test: Metals & Non-metals - Question 24

Cinnabar is an ore of –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 24

Cinnabar is a toxic mercury sulfide mineral with a chemical composition of HgS. It is the only important ore of mercury. It has a bright red color that has caused people to use it as a pigment, and carve it into jewelry and ornaments for thousands of years in many parts of the world. Because it is toxic, its pigment and jewelry uses have almost been discontinued.

NTSE Level Test: Metals & Non-metals - Question 25

The constituent of haemoglobin is –

Detailed Solution for NTSE Level Test: Metals & Non-metals - Question 25

Iron is an essential element for blood production. About 70 percent of your body's iron is found in the red blood cells of your blood called hameoglobin.

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