Chemistry

Q791: Identify the Lucas reagent among the following?

مندرجہ ذیل میں لوکاس ریجنٹ کی شناخت کریں؟

HCl hydrated ZnCl₂

Conc. HCl & Anhydrous ZnCl₂

Conc. HNO₃ & Anhydrous ZnCl₂

None of these

Q792: In analysts are measuring chloride contents in water in four different laboratories. If known (accepted) value of chloride is 105 mg/L then results obtained in ______ laboratory have low accuracy and high precision.

85.8mg/L, 86.7mg/L, 88.85mg/L, 87mg/L

107.5mg/L, 105 mg/L, 109mg/L, 110.5mg/L

102mg/L, 103mg/L, 102.7mg/L, 101.5mg/L

None of these

Q793: Which of the following atoms has the largest diameter?

مندرجہ ذیل میں سے کون سے جوہری کا سب سے بڑا قطر ہے؟

I

Br

Cl

None of these

Q794: Presence of glucose in urine can be detected by ______?

پیشاب میں گلوکوز کی موجودگی کا پتہ ______ کے ذریعہ کیا جاسکتا ہے؟

Tollen's test

Lucas test

Fehling's test

None of these

Q795: The particles, atom, or molecules in solid remains in motion and that motion is limited to:

ٹھوس میں موجود ذرات، ایٹم یا مالیکیول حرکت میں رہتے ہیں اور وہ حرکت کہاں تک محدود ہے

Rotational motion

Translational motion

Vibrational motion

Random motion

Q796: This is absent in prokaryotic cells. a) Chloroplast b) Ribosome c) Cell wall d) DNA

Chloroplast

Ribosome

Cell wall

DNA

Q797: Which compound has most acidic hydrogen? Butane, 1 -butyne, 2-butyne, 1-butene

کس مرکب میں سب سے زیادہ تیزابیت والا ہائیڈروجن ہے؟

Butane

1-butyne

2-butyne

1-butene

Q798: Compound has the formula XF₄. The element X cannot be ______?

Sn

Sc

Si

None of these

Q799: Which one of the following is more energetic?

مندرجہ ذیل میں سے کون سا زیادہ توانائی بخش ہے؟

4f

4d

4s

None of these

Q800: The most suitable temperature for the moderate drying of the solid substance is ______?

ٹھوس مادہ کے اعتدال پسند خشک ہونے کے لئے سب سے موزوں درجہ حرارت ______ ہے؟

120°C

220°C

320°C

None of these

Q791: Identify the Lucas reagent among the following?

Explanation

Q792: In analysts are measuring chloride contents in water in four different laboratories. If known (accepted) value of chloride is 105 mg/L then results obtained in ______ laboratory have low accuracy and high precision.

Explanation

Q793: Which of the following atoms has the largest diameter?

Explanation

Q794: Presence of glucose in urine can be detected by ______?

Explanation

Q795: The particles, atom, or molecules in solid remains in motion and that motion is limited to:

Explanation

Q796: This is absent in prokaryotic cells. a) Chloroplast b) Ribosome c) Cell wall d) DNA

Explanation

Q797: Which compound has most acidic hydrogen? Butane, 1 -butyne, 2-butyne, 1-butene

Explanation

Q798: Compound has the formula XF₄. The element X cannot be ______?

Explanation

Q799: Which one of the following is more energetic?

Explanation

Q800: The most suitable temperature for the moderate drying of the solid substance is ______?

Explanation

Chemistry

Q791: Identify the Lucas reagent among the following?

Explanation

Q792: In analysts are measuring chloride contents in water in four different laboratories. If known (accepted) value of chloride is 105 mg/L then results obtained in ______ laboratory have low accuracy and high precision.

Explanation

Q793: Which of the following atoms has the largest diameter?

Explanation

Q794: Presence of glucose in urine can be detected by ______?

Explanation

Q795: The particles, atom, or molecules in solid remains in motion and that motion is limited to:

Explanation

Q796: This is absent in prokaryotic cells. a) Chloroplast b) Ribosome c) Cell wall d) DNA

Explanation

Q797: Which compound has most acidic hydrogen? Butane, 1 -butyne, 2-butyne, 1-butene

Explanation

Q798: Compound has the formula XF₄. The element X cannot be ______?

Explanation

Q799: Which one of the following is more energetic?

Explanation

Q800: The most suitable temperature for the moderate drying of the solid substance is ______?

Explanation

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