ravi anand - Study24x7
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ravi anand

Studied Bachelor of Science in Biology at Hindu College (Id: C-6377)
Chemistry Teacher at K.D Campus
Live in North Delhi,India, Delhi
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My name is Ravi Mishra I have done my graduation with science from Hindu College...
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ravi anand
18 Apr 2020 03:03 AM study24x7 study24x7

What is the number of electrons in Na+

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ravi anand
18 Apr 2020 03:01 AM study24x7 study24x7

What is the chemical formula of Plaster of Paris

A

NaHCo3

B

CaSO4.½H2O

C

CaSO4.2H20

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ravi anand
18 Apr 2020 03:00 AM study24x7 study24x7

Which is the longest cell in human body

A

Sperm cells

B

Egg cell (ova)

C

Neurons

D

Skin cells

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ravi anand
18 Apr 2020 02:58 AM study24x7 study24x7

Which chemical is present in nail polish remover

A

Acetaldehyde

B

Acetone

C

Acetylcholine

D

Alcohol

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ravi anand
18 Apr 2020 02:57 AM study24x7 study24x7

What is heavy water

A

Nacl in water

B

D2O

C

H2O2

D

KOH

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ravi anand
18 Apr 2020 02:57 AM study24x7 study24x7

Which among the following is inert gas

A

Helium

B

Carbon monoxide

C

Oxygen

D

Non of above

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ravi anand
18 Apr 2020 02:55 AM study24x7 study24x7

Elements have same atomic number but different mass number is known as

A

Isobars

B

Isotope

C

Isodiafers

D

Isoelectronic

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ravi anand
18 Apr 2020 02:54 AM study24x7 study24x7

Which is the smallest bone in human body?

A

Mallius

B

Humorous

C

Stepes

D

Ulna

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ravi anand
17 Apr 2020 01:15 PM study24x7 study24x7

What is formula of baking soda?

A

Na2Co3

B

NaHCo3

C

Ca2So4

D

NaCl

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ravi anand
17 Apr 2020 01:13 PM study24x7 study24x7

What the phenomenon of conversation of solid directly into gas called?

A

Sublimation

B

Precipitation

C

Condensation

D

None of above

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