Chemistry

Q681: Protein present in haemoglobin has _______ structure.

Primary

Secondary

Tertiary

Quaternary

Q682: Which gives blue color in borax bead test? a. Copper b. Cobalt c. Chromium d. None of these

Copper

Cobalt

Chromium

None of these

Q683: Which one of the following detector is not suitable to use with gas chromatography?

مندرجہ ذیل میں سے کون سا ڈیٹیکٹر گیس کرومیٹوگرافی کے ساتھ استعمال کرنے کے لئے موزوں نہیں ہے؟

AAS

MS

TCD

None of these

Q684: Which of the following process does not use a catalyst?

مندرجہ ذیل میں سے کون سا عمل اتپریرک استعمال نہیں کرتا ہے؟

Contact process

Haber process

Thermite process

None of these

Q685: The high polymer of Ethylene is known as ______?

ایتھیلین کا اعلی پولیمر ______ کے نام سے جانا جاتا ہے؟

Tetralene

Polythene

Tyrene

None of these

Explanation

Ethylene ( $C_2H_4$ ) undergoes polymerization to form Polyethylene (Polythene).

It is widely used in plastic bags, containers, and packaging materials.

Q686: C₆H₁₂ is ______?

Alkane

Cycloalkene

Cycloalkane

None of these

Q687: Phenols are ______?

فینول ______ ہیں؟

Basic in nature

Acidic in nature

Natural compounds

None of these

Q688: Which of the following spectroscopy uses an energy source of around 7ev?

مندرجہ ذیل میں سے کون سا سپیکٹروسکوپی 7 ای وی کے توانائی کے ذریعہ استعمال کرتا ہے؟

UV (Ultraviolet) spectroscopy

Infrared

Emission spectroscopy

None of these

Q689: A catalyst ______?

ایک اتپریرک کیا ہے؟

Increases the average kinetic energy of the reactants

Alters the reaction mechanism

Increases the activation energy

None of these

Q690: Ohm × Farad is equivalent to:

Second

Weber

Henry

Tesla

Q681: Protein present in haemoglobin has _______ structure.

Explanation

Q682: Which gives blue color in borax bead test? a. Copper b. Cobalt c. Chromium d. None of these

Explanation

Q683: Which one of the following detector is not suitable to use with gas chromatography?

Explanation

Q684: Which of the following process does not use a catalyst?

Explanation

Q685: The high polymer of Ethylene is known as ______?

Explanation

Q686: C₆H₁₂ is ______?

Explanation

Q687: Phenols are ______?

Explanation

Q688: Which of the following spectroscopy uses an energy source of around 7ev?

Explanation

Q689: A catalyst ______?

Explanation

Q690: Ohm × Farad is equivalent to:

Explanation

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