19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Benzamide on treatment with POCl3 gives
In the given reaction, H O C H CO O I -> H O C H COOCOCH II -> Identify the product(s) formed in the given reaction. I II
Assertion : p–hydroxybenzoic acid has a lower boiling point than o–hydroxybenzoic acid. Reason : o–hydroxybenzoic acid has intramolecular hydrogen bonding.
Assertion : (CH3)3C–COOH does not give HVZ reaction. Reason : It does not have any -hydrogen
Table sugar is a
A disaccharide on hydrolysis gives
What is the structure of L-Glucose? (a) (b) (c)
Which of the following is a non-reducing sugar?
The commonest disaccharide has the molecular formula
Assertion: Glucose does not give 2, 4- DNP test. Reason: Glucose exists in cyclic hemiacetal form.
Assertion: Hydrolysis of sucrose is known as inversion of cane sugar. Reason: Sucrose is a disaccharide.
Assertion: Maltose is a reducing sugar which gives two moles of D-glucose on hydrolysis. Reason: Maltose has a 1,4’- -glycosidic linkage.
Assertion: Sucrose is a non-reducing sugar. Reason: It has glycosidic linkage.
The hormone which controls the processes like burning of fats, proteins and carbohydrates to liberate energy in the body is
Which one of the following is a peptide hormone ?
The cell membranes are mainly composed of
Which one of the following vitamins is water soluble?
The human body does not produce
During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process are respectively
Invert sugar is mixture of (JIPMER 2019)
Which structure(s) of proteins remain(s) intact during denaturation process? (Odisha NEET 2019)
The non-essential amino acid among the following is (NEET 2019)
Which of the following represents the correct structure of cellulose? (AIPMT 2018)
Which of the following compounds can form a zwitter ion? (NEET 2018)
The difference between amylose and amylopectin is (NEET 2018)