Match the following I. Bauxite (a) Cu II. Monazite (b) U III. Malachite (c) Th IV. Pitch blende (d) Al

I - d , II - c , III - a , IV - b

I - d , II - c , III - b , IV - a

I - b , II - c , III - d , IV - a

I - d , II - a , III - b , IV - c

Match List- I with List- II . List- I List- II (a) Siderite (i) Cu (b) Calamine (ii) Ca (c) Malachite (iii) Fe (d) Cryolite (iv) Al (v) Zn Choose the correct answer from the options given below:

a → iii , b → v , c → i , d → iv

a → iii , b → i , c → v , d → ii

a → i , b → ii , c → v , d → iii

a → i , b → ii , c → iii , d → iv

Match List-I with List-II : List-I (Name of ore/mineral) List-I (Chemical formula) a Calamine i ZnS b Malachite ii FeCO 3 c Siderite iii ZnCO 3 d Sphalerite iv CuCO 3 · Cu ( OH ) 2 Choose the most appropriate answer from the options given below :

( a ) -( iii ), ( b ) -( iv ),( c )-( ii ),( d )-( i )

( a ) - ( iv ) , ( b ) - ( iii ) , ( c ) - ( i ) , ( d ) - ( ii )

( a ) - ( iii ) , ( b ) - ( ii ) , ( c ) - ( iv ) , ( d ) - ( i )

( a ) -( iii ),( b )-( iv ),( c )-( i ),( d )-( ii )

Match List- I with List- II . List- I (Ore) List- II (Element Present) a Kernite p Tin b Cassiterite q Boron c Calamine r Fluorine d Cryolite s Zinc Choose the most appropriate answer from the options given below:

a → q , b → p , c → s , d → r

a → r , b → p , c → q , d → s

a → q , b → s , c → p , d → r

a → p , b → r , c → s , d → q

Match List-I and List-II : List-I List-II a Haematite i Al 2 O 3 · xH 2 O b Bauxite ii Fe 2 O 3 c Magnetite iii CuCO 3 · Cu ( OH ) 2 d Malachite iv Fe 3 O 4 Choose the correct answer from the options given below :

( a ) - ( ii ) , ( b ) - ( i ) , ( c ) - ( iv ) , ( d ) - ( iii )

( a )-( ii ), ( b )-( iii ),( c )-( i ),( d )-( iv )

( a )-( iv ) , ( b ) - ( i ) , ( c ) - ( ii ) , ( d ) - ( iii )

( a )-( i ), ( b )-( iii ), ( c )-( ii ), ( d )-( iv )

MEDIUM

Earn 100

Which of the following statements with regard to the reaction given below are correct?

$CaO (s) + H_{2} O (I) \to Ca {(OH)}_{2} (aq) + Heat$

$1 .$ Quicklime is used for whitewashing of walls.

$2 .$ The solution of slaked lime is used for whitewashing of walls.

$3 .$ CaO reacts slowly with ${CO}_{2}$ in air to form a thin layer of ${CaCO}_{3}$ on walls.

$4 .$ Calcium hydroxide called 'slaked lime' is an inorganic compound.

Select the correct answer using the code given below.

50% studentsanswered this correctly

Important Questions on Chemistry

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Bauxite is the ore of

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Which of the following mixture can form an alloy?

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Match the following

I.	Bauxite	(a)	$Cu$
II.	Monazite	(b)	$U$
III.	Malachite	(c)	$Th$
IV.	Pitch blende	(d)	$Al$

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Which one of the following is not true for the form of carbon known as diamond?

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Match List- $I$ with List- $II$ .

List- $I$		List- $II$
(a)	Siderite	(i)	$Cu$
(b)	Calamine	(ii)	$Ca$
(c)	Malachite	(iii)	$Fe$
(d)	Cryolite	(iv)	$Al$
		(v)	$Zn$

Choose the correct answer from the options given below:

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

In medicine, ______ is a device such as a small metal plate or needle that carries electricity from an instrument to a patient for treatment or surgery.

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Match List-I with List-II :

	List-I (Name of ore/mineral)		List-I (Chemical formula)
a	Calamine	i	$ZnS$
b	Malachite	ii	${FeCO}_{3}$
c	Siderite	iii	${ZnCO}_{3}$
d	Sphalerite	iv	${CuCO}_{3} \cdot Cu (OH)_{2}$

Choose the most appropriate answer from the options given below :

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Which one of the following is used for storing biological tissues?

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Match List- $I$ with List- $II$ .

	List- $I$ (Ore)		List- $II$ (Element Present)
$(a)$	Kernite	$(p)$	Tin
$(b)$	Cassiterite	$(q)$	Boron
$(c)$	Calamine	$(r)$	Fluorine
$(d)$	Cryolite	$(s)$	Zinc

Choose the most appropriate answer from the options given below:

EASY

General Awareness>General Science>Chemistry>Elements and Compounds

Match List-I and List-II :

	List-I		List-II
a	Haematite	i	${Al}_{2} O_{3} \cdot {xH}_{2} O$
b	Bauxite	ii	${Fe}_{2} O_{3}$
c	Magnetite	iii	${CuCO}_{3} \cdot Cu (OH)_{2}$
d	Malachite	iv	${Fe}_{3} O_{4}$