OTS (Open Testing Service) · Khuddam-ul-Hujjaj/ Nazims for Hajj (OTS 2027 - Includes All NTS Past Papers)

Central American Integration System (SICA) MCQs with Answers & Explanations

International Organizations  · General Knowledge

243 Questions • 183 Mins Practice • Updated for 2026 Competitive Exams
243 MCQs
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Showing 101–120 of 243 MCQs Page 6 / 13

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243 Questions
101
The system that drains blood back from the body to the circulatory system is:
102
Role of mRNA in COVID-19 vaccines like Pfizer and Moderna is to:
103
A person has swollen lymph nodes after throat infection. What does this indicate?
104
In nervous system chemical messengers are called?
105
Ligands having two lone pair of electrons for donation to the central transition metal ion are known as?
106
The different magnitudes of same physical quantities are measured by comparing them to:
107
The main neurotransmitter for synapses is ______ which lie outside the central nervous system.
108
Acetylcholine and Noradrenaline are two types of ______ used in our nervous system.
109
Which of the following photosystem is involved in cyclic photophosphorylation?
110
In electron transport chain, ATP synthesis takes place when electron moves from?
111
Which of the following is the components/ tools of recombinant DNA technology?
112
The neurotransmitter active outside the CNS (Central Nervous System) is:
113
Water vascular system or ambulacral system is a unique and complex system specially present in?
114
The Coulomb's constant k depends upon:
115
Four chambered heart with right systemic arch only is present in?
116
In the journey of electrons from photosystem II to photosystem I plastocyanin is reduced by :
117
Which of the following neurotransmitters is lying outside the central nervous system?
118
Which of the following is NOT a feature of Autonomic Nervous System?
119
Female reproductive system consists all of the following EXCEPT ?
120
Which word is a synonym for "whimsical"?